Answer:
21 students
Explanation:
the percent proportion is a/w = p/100
where A is a part of the whole W, and p% or p/100 is the percent
a/140 = 15/100 (Substitute w =140 and p= 15)
a times 100=140 times 15 (cross poducts property)
100a=2100 (Multiply)
100a/100 = 2100/100 (divide both sides by 100)
a = 21 (simplify)
So, 21 students win the award.