Question

What number is to be added to each tem of the ratio 2:5 to make to equal 4:5 [Ans:10] ?​

Answer 1

Step-by-step explanation:

Let X be a required number which is added in the given ratio.

Then ,

=> 2 + X / 5 + X = 4/5

=> 5 × (2 + X ) = 4 × ( 5 + X )

=> 10 + 5 X = 20 + 4X

=> 5X - 4X = 20 - 10

=> X = 10