Question

number of boys in the class.
After 15 years, Mary's age will be four times of her present age. Find her present age
Aravind has a kiddy bank. It is full of one-rupee and fifty paise coins. It contains 3 tim
The total amount of the money in the bank​

Answer 1

Answer:

5 years

Step-by-step explanation:

let her present age be x ,

after 15 years , her age = x+15

also , 4x = x+15

4x-x=15

3x = 15

x = 5

so her present age is 5 years

Answer 2

Answer:

5

Step-by-step explanation:

Let Mary's age be x

After 15 years Mary's age =4x

=x+15=4x

=15=4x-x

=15=3x

x=15/3

=5