Math Problems

Math problems 1. Three babies were born on the same day. The first weighed 7 pounds, the second weighed 6 pounds, and the third weighed 7 pounds. How much did the three babies weigh all together? (22 1/8 pounds) 2. You were earning $400 a week and got a $50 raise. By what percent did your salary increase? 3. Your weight fell from 180 pounds to 160 pounds. By what percent did your weight decrease? 4. What is the percentage change if we go from 225 to 250? 5. John has four blue marbles, three red marbles, two green marbles, and 1 yellow marble. What is his percentage distribution of red, blue, green, and yellow marbles? 6. If Marsha received one-third of the vote, Bill received twofifths of the vote, and Diane received the rest of the votes in a class election, what percent of the votes did Diane receive? 7. If you had six pennies, three nickels, four dimes, and a quarter, what percentage of a dollar would you have? 8. You’re driving at 50 mph and increase your speed by 20%. How

fast are you now going? 9. If your restaurant bill came to $16.85 and you left a 15% tip, how much money would you leave for the tip? 10. A large cake was shared equally by three families. If each family had four members, what fraction of the cake did each person receive? ( 1/12)

ANSWERS: 1). 22 1/8 pounds 2). 50/400 x 100 = 12.5% 3). 20/180 x 100 = 11.1% 4). 25/225 x 100 = 11.1% 5). blue = = 40%, red = = 30%, green = = 20% ., yellow = = 10% 6). 1/3 + 2/5 = 11/15, 4/15 X 100 = 26.7% 7). 6 x 1c + 3 x 5c + 4 x 10c + 25 c = 86 c = 86 % 8). 50 + (50 ⋅ 0.2) = 50 + 10 = 60 mph 9). $2.53 10). 1/12 is the share of each.