Question

The ages of A and B are in the ratio 3:5 After 9years the ratio of their ages will be 3:4. The present age of B is

Answer 1

Let present age of A be x

&B be y.

According to 1st condition,

X/Y=3/5

5X=3Y

Y=5X/3 (1)

According to 2nd condition,

x+9/y+9=3/4

4x+36=3y+27

4x-3y=27-36

4x-3y=-9 (2)

From (1),

Y=5x/3

Sub y=5x/3 on equation (2)

4x-3(5x/3)=-9

4x-5x=-9

-x=-9

x=9

++++++++++++++++++++++

Hope it helps you.

***************************

Please mark me brainliest.

~~~~~~~~~~~~~~~~~~

☺️☺️☺️