Mathematics After School Bkn
This document was uploaded by user and they confirmed that they have the permission to share it. If you are author or own the copyright of this book, please report to us by using this DMCA report form. Report DMCA
Overview
Download & View Mathematics After School Bkn as PDF for free.
More details
- Words: 672
- Pages: 19
MATHEMATICS AFTERSCHOOOL Centre for social entrepreneurship, bikaner www.afterschoool.tk www.afterschool.tk
www.afterschool.tk
If an amount doubles in 10 years at simple interest – when will in triple? • 20 years.
www.afterschool.tk
What is the difference between simple interest and compound interest (compounded quarterly), if P = 100, R = 20 and time = 2 years.
• Rs. 7.75 approx.
www.afterschool.tk
When will the value of a plant become 30 percent of its purchase price – if it is depreciated 20% everyyear.
• 5.45 years approximately.
www.afterschool.tk
A sum of money becomes 6690 after 3 years and 10035 after 6 years, what is the principal, and what will be the amount after 9 years (compound interest) ?
• Principal is 4460 and amount after 9 years will be approx. 15052. www.afterschool.tk
The difference between simple interest and compound interest for 2 years at 4% per annum is 20, what is the principal?
• Let us assume, that principal is 100, difference is Rs. .16, what will be the principal – if the difference is 20 = • 100/.16 *20 = 12500/-
www.afterschool.tk
An amount of Rs. 1000 is to be paid back after 3 years, compound interest rate is 10% p.a.= what will be the amount?
• =1000*1.1*1.1*1.1 = 1331 Ans.
www.afterschool.tk
The difference between simple interest and compound interest is 15.5 after 3 years at 10 %p.a. – what is the principal?
• Let us assume that the principal is 1000 , simple interest : 300, compound interest : 331 = so the difference is 31. If the difference is 31, the principal is 1000, if the difference is 15.5 (half), the principal will be 500 (half).
www.afterschool.tk
I was to earn Rs 300 and a free holiday for seven week’s work, I worked for 4 weeks only and earned Rs 30 and free holiday. What is the value of my holiday?
• • • •
Rs. 330. Solve by equations: (7x = 300 +h) (4x = 30 + h)
www.afterschool.tk
After 2 years, Amt. is 2916 and after 3 years it is 3149.28, what is it now (compound interest)?
• =2916*2916/3149.28 = 2700 (after one year), • 2700*(2916/3149.28) = 2500 (now) ans.
www.afterschool.tk
An amount doubles in 10 years (compound interest), when will it be four times? • 20 years.
www.afterschool.tk
1095 / 1168 – in simplest form is equal to ? • Step 1. – calculate HCF – 73 • Divide these by 73 to get – 15/16.Ans.
www.afterschool.tk
The largest no. that will divide 99,123,183,and leave the same remainder? • Find the differences of these numbers: 24, 60, 84 – now find their HCF. = 12 Ans.
www.afterschool.tk
What is the least no. – which when divided by 6, leaves 5, and when divided by 7 leaves 6 , divided by 8 leaves 7 as remainder?
• All the numbers are giving one less as remainder – so first calculate LCM and deduct one from the LCM. • LCM of 6,7,8 = 168- 1 = 167Ans.
www.afterschool.tk
If a man spends 5/6th of his money and again earns ½ of the remaining money – what part of original money does he have now?
• It is 1/4th
www.afterschool.tk
If the difference between a number and 1/5th of the no. is 20, what is the no.? • The amount is 25.
www.afterschool.tk
What will be the least no. of square tiles that you will use in floor of size = 15.17 by 9.02? • Step 1 = HCF of these no. = .41(one side of tile) • Step 2 divide area of room by area of tile: • 15.17*9.02 / (.41*.41) = 814.
www.afterschool.tk
Thanks • Afterschoool conducts three year integrated PGPSE (after class 12) and 18 month PGPSE (Post Graduate Programme in Social Entrepreneurship). It is free for all. It also conducts workshops on social entrepreneurship in schools and colleges all over India – start social entrepreneurship club in your institution today with the help from afterschoool and help us in developing society. www.afterschool.tk
www.afterschoool.tk social entrepreneurship for better society
www.afterschool.tk
www.afterschool.tk
If an amount doubles in 10 years at simple interest – when will in triple? • 20 years.
www.afterschool.tk
What is the difference between simple interest and compound interest (compounded quarterly), if P = 100, R = 20 and time = 2 years.
• Rs. 7.75 approx.
www.afterschool.tk
When will the value of a plant become 30 percent of its purchase price – if it is depreciated 20% everyyear.
• 5.45 years approximately.
www.afterschool.tk
A sum of money becomes 6690 after 3 years and 10035 after 6 years, what is the principal, and what will be the amount after 9 years (compound interest) ?
• Principal is 4460 and amount after 9 years will be approx. 15052. www.afterschool.tk
The difference between simple interest and compound interest for 2 years at 4% per annum is 20, what is the principal?
• Let us assume, that principal is 100, difference is Rs. .16, what will be the principal – if the difference is 20 = • 100/.16 *20 = 12500/-
www.afterschool.tk
An amount of Rs. 1000 is to be paid back after 3 years, compound interest rate is 10% p.a.= what will be the amount?
• =1000*1.1*1.1*1.1 = 1331 Ans.
www.afterschool.tk
The difference between simple interest and compound interest is 15.5 after 3 years at 10 %p.a. – what is the principal?
• Let us assume that the principal is 1000 , simple interest : 300, compound interest : 331 = so the difference is 31. If the difference is 31, the principal is 1000, if the difference is 15.5 (half), the principal will be 500 (half).
www.afterschool.tk
I was to earn Rs 300 and a free holiday for seven week’s work, I worked for 4 weeks only and earned Rs 30 and free holiday. What is the value of my holiday?
• • • •
Rs. 330. Solve by equations: (7x = 300 +h) (4x = 30 + h)
www.afterschool.tk
After 2 years, Amt. is 2916 and after 3 years it is 3149.28, what is it now (compound interest)?
• =2916*2916/3149.28 = 2700 (after one year), • 2700*(2916/3149.28) = 2500 (now) ans.
www.afterschool.tk
An amount doubles in 10 years (compound interest), when will it be four times? • 20 years.
www.afterschool.tk
1095 / 1168 – in simplest form is equal to ? • Step 1. – calculate HCF – 73 • Divide these by 73 to get – 15/16.Ans.
www.afterschool.tk
The largest no. that will divide 99,123,183,and leave the same remainder? • Find the differences of these numbers: 24, 60, 84 – now find their HCF. = 12 Ans.
www.afterschool.tk
What is the least no. – which when divided by 6, leaves 5, and when divided by 7 leaves 6 , divided by 8 leaves 7 as remainder?
• All the numbers are giving one less as remainder – so first calculate LCM and deduct one from the LCM. • LCM of 6,7,8 = 168- 1 = 167Ans.
www.afterschool.tk
If a man spends 5/6th of his money and again earns ½ of the remaining money – what part of original money does he have now?
• It is 1/4th
www.afterschool.tk
If the difference between a number and 1/5th of the no. is 20, what is the no.? • The amount is 25.
www.afterschool.tk
What will be the least no. of square tiles that you will use in floor of size = 15.17 by 9.02? • Step 1 = HCF of these no. = .41(one side of tile) • Step 2 divide area of room by area of tile: • 15.17*9.02 / (.41*.41) = 814.
www.afterschool.tk
Thanks • Afterschoool conducts three year integrated PGPSE (after class 12) and 18 month PGPSE (Post Graduate Programme in Social Entrepreneurship). It is free for all. It also conducts workshops on social entrepreneurship in schools and colleges all over India – start social entrepreneurship club in your institution today with the help from afterschoool and help us in developing society. www.afterschool.tk
www.afterschoool.tk social entrepreneurship for better society
www.afterschool.tk
Related Documents
Mathematics After School Bkn
November 2019 14
After School
December 2019 8
After School Agenda 2
June 2020 5
Kerala School Of Mathematics
July 2020 7
High School Mathematics
October 2019 41