Question

Of 140 seventh-grade students, 15% earn the Presidential Physical Fitness Award. How many students earn the award?

Answer 1

We have an equation: ?/140= 15/100

Cross multiply:
100*?= 15*140
⇒ ?= 15*140/100= 21

21 students earn the Presidential Physical Fitness Award~

Answer 2

15% is equivalent to the fraction 3/20 so you must divide 140 by 20 then multiply by 3 to get the final answer of 21 students. Hope this helps :D