Question

19. After 15 years , Mary's age will be four times of her present age. Find her present age.​

Answer 1

Answer:

Your answer is Exactly Right !

Given that ;

After 15 yrs ;

Mary's age will be 4 times of her present age .

Let

The present Age of Mary be x

After 15 years ,

x + 15

Mary's Age after 15 years = 4x

4x = x + 15

4x - x = 15

3x = 15

x = 15 / 3

x = 5 years

Present age of Mary is 5 years

Mary's Age after 15 years = ( x + 15 )

= 5 + 15

= 20 years