Question

3 years ago sanjus age was double of sheeja .seven years hence the sum of their age wil be 86 years .the age of sanju today is

Answer 1

Let Sheeja's age be x today.
Then, Sanju's age today is 2(x-3)+3
A/Q,
(x+7)+(2x-6+3+7)=86
x+7+2x+4=86
3x+11=86
3x=75
x=25

So, Sanju's present age is 2(25-3)+3
=47

Answer 2

Answer:

Sanju's present age = 47 years

Step-by-step explanation:

Let the present age of sanju be x

Let the present age of Sheeja be y

3 years ago

Sanju's age = x-3

Sheeja's age = y-3

We are given that 3 years ago sanju's age was double of sheeja .

So, $x-3=2(y-3)$

$x-3=2y-6$

$x=2y-3$ --1

After 7 years

Sanju's age = x+7

Sheeja's age = y+7

We are given that the sum of their age will be 86 years after 7 years.

So, $x+7+y+7=86$

$x+y=86-14$

$x+y=72$

Substitute the value of x from 1

$2y-3+y=72$

$3y=75$

$y=25$

Substitute the value of y in 1 to get value of x

$x=2(25)-3$

$x=50-3$

$x=47$

Thus the present age of Sanju is 47years and present age of Sheeja is 25 years .

Hence Sanju's present age is 47 years.