Question

Sam had 4/5 yards of yarn. He used 3/8 of the yarn. How many yards of yarn did he use?

Please put your answer in lowest terms.

(a). 5/8
(b). 7/10
(c). 3/10
(d). 3/13

Answer 1

c)3/10 is the correct answer.

3/8*4/5=12/40

12/40=3/10 or 0.3

Answer 2

we know that

1) Sam had
`(4)/(5)` yards of yarn

2) Sam used
`(3)/(8)` of the yarn

so

To calculate how many yards of yarn he used

Multiply
`(4)/(5)` by
`(3)/(8)`

`(4)/(5) *(3)/(8) =(12)/(40) \ yards`

Simplify

Divide by
`4` both numerator and denominator

`(12)/(40)=((12/4))/((40/4))=(3)/(10)\ yards`

therefore

the answer is the option C

`(3)/(10)\ yards`