Question

What should be added to each term of the ratio 3 : 8 so that it may become equal to 2:5

Answer 1

Answer:

let the no. be x

3/8) + x = 2/5

x= 2/5)-3/8

x= 1/40

so you can add 1/40 or 0.025

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Answer 2

Answer:

Term = 1 / 3

Step-by-step explanation:

Let the number to be added be x

Given Ratio = 3:8

Equals to = 2:5

( 3 + x ) : ( 8 + x ) = 2:5

3+x / 8+x = 2/5

By Cross Multiplication ;

5 ( 3+x ) = 2 ( 8+x )

15 + 5x = 16 + 2x

5x - 2x = 16 - 15

3x = 1

x = 1/ 3

Proof :

( 3 + x ) : ( 8 + x ) = 2:5

3 + 1/3 : 8 + 1/3

By doing LCM :

9+1 / 3 : 24 + 1 / 3

10 / 3 : 25 / 3

10 : 25

2 : 5