Question

60 cups of popcorn feed 15 students. How many cups of popcorn are needed to feed 70 students ?

A 280 cups
B 900 cups
C 1,050 cups
D 4,200 cups

Answer 1

A

Explanation:

60:15::x:70

60*70=15*x

x=4*70 =280

Answer 2

Explanation:

60 to 15 = x to 70

60/15 = x/70.....cross multiply

15x = 4200

x = 4200/15

x = 280 <=== answer A