Question

the ratio of reema and her elder sister is 3:5. After 3 yr, ratio of there age become 2:3 . Find reema 's present age ?​

Answer 1

Answer:

Reema's age is 6

Step-by-step explanation:

Let Reema's age be 3x and her sister's be 5x

3x + 5x + 6 = 2x + 3x

I added 6 because we have to add 3 years to their age to make them equal to the RHS.

8x + 6 = 5x

8x - 5x + 6 = 0

3x + 6 = 0

3x = - 6

x = - 6/3

x = - 2 (obviously it cannot be - ve so we take it as positive)

Reema's age = 3x = 3*2 = 6

Answer 2

Answer:

Let reemas age be 3x and sisters age be 5x

After six years = 2x and 3x

Equation -  

3x + 65x + 6 = 23

9x + 18 = 10x + 12  

18-12= 10x-9x

6 = x