Question

X:20 = 5:x

Calculate the positive value of x

Answer 1

x = 10

Explanation:

expressing the ratios in fractional form

`(x)/(20)` =
`(5)/(x)` ( cross- multiply )

x² = 100 ( take square root of both sides )

x = ±
`√(100)` = ± 10

the positive solution is x = 10

Answer 2

10

Explanation:

x/20= 5/x

x²= 100

x=√100

X=±10

x=10