Question

Solve for z in the problem below:

4/5 = z/20

A.z = 16

B. z = 80

C. z = 13

D. z = 5

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Answer 1

A

Explanation:

Given

`(4)/(5)` =
`(z)/(20)`

Multiply both sides by 20 to clear the fractions

16 = z → A

Answer 2

A. z = 16

Explanation:

Multiply both sides by 20 isolate the variable z.

`(4)/(5) *(z)/(20)`

`(4)/(5) *20 = (z)/(20) *20`

`z = (4)/(5) *20`

Multiplying
`(4)/(5)` by 20 will give us 16.

`(4)/(5) *(20)/(1) = (80)/(5)`
`= 16`

Therefore, z is equal to 16.