Question

Find the value of x, when 2.5 : 4 = x: 7.5.​

Answer 1

We are given that 2.5 : 4 = x : 7.5

That means

2.5 ÷ 4 = x ÷ 7.5

2.5/4 = x/7.5   Cross multiplying

4x = 2.5 × 7.5

4x = 18.75

x = 4.6875

I think you are in a lower class. Keep practising.