Question

If n/5=45/75.find the value of n.

Answer 1

n =
`(9)/(5)`

Explanation:

Simplify the fraction on the right side

`(n)/(5)` =
`(45)/(75)` =
`(3)/(5)` ( cross- multiply )

5n = 15 ( divide both sides by 5 )

n = 3

Answer 2

Start with

`(n)/(5)=(45)/(75)`

Multiply both sides by 5:

`n = (45\cdot 5)/(75) = (45)/(15) = 3`