Two numbers are in a ratio 2 : 3. What must be added to each of them so that the ratio becomes 4 : 5?
3
2
9
4
Let the number to be added be x. Then, (2 + x):(3 + x) = 4 : 5
⇒ 2+x3+x=45⇒5(2+x)=4(3+x)⇒ 10+5x=12+4x⇒ 5x−4x=12−10⇒ x=2
What must be added to each term of the ratio 2 : 3, so that it becomes equal to 4 : 5?
What quantity must be added to each term of the ratio 6:11 so that it becomes equal to 2:3?