Fraction Help 2 Problems

Question

if a/b = 3/2, then 8a equals which of the following?

 

a. 16b

b. 12b

c. 3b/2

d. 8/3b

 

20% of 3 yards is how many fifths of 9 feet?

 

a. 1

b. 6

c. 10

d. 15

Answer 1

a/b=3/2

cross multiply

2a=3b

multiply both sides by 4

8a=12b  answer which is b.

 

20% of 3 yards

20% of 9 feet

0.2*9

0.2=2/10

2/10=1/5

1/5 of 9 feet  answer which is a.