Question

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

Answer 1

Answer:

5 years

Step-by-step explanation:

if her age is 5 years then after 15 years it will be 20 years

and also 4 times 5 is 20

Mark me as brainliest my dear ❤❤

Answer 2

Answer :

• Her present age is 5 years

Given :

• After 15 years , Mary's age will be four times of her present age

To find :

• Her present age

Solution :

• Let her present age be x
• Aftet 15 years, Age of Mary will be x + 15

Given that,

• After 15 years , Mary's age will be four times at her present age so ,

》15 + x = 4 × x

》15x + x = 4x

》15x = 4x - x

》15 = 3x

》3x = 15

》x = 15/3

》x = 5

Hence ,

• Her present age is 5 years