Question

sumit is 3times as old as his son .Five years later ,he shall be two and a half times as old as his son . how old is sumit at present​

Answer 1

Let son age = x

Sumit age = 3x

After 5 yrs.

sumit = 3x + 5

son = x + 5

3x + 5= 5/2(x + 5)

3x + 5= 5x + 25/2

2(3x + 5) = 5x + 25

6x + 10 = 5x + 25

x = 15

son age = 15

sumit age = 15 × 3 = 45

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Answer 2

Answer:

15,45

Step-by-step explanation:

Let summit's age be x years and his son's age be y years

According to given condition:

x=3y ..(i)

x+5= 5/2(y+5)

2(x+5) = 5y+25

2x+10= 5y+25

2x = 5y+15

Substituting value from (i)

2(3y) = 5y+15

6y=5y+15

6y-5y=15

y=15

Substituting value from (i)

x=3y

x=3*15

x=45

sumit age=45

son of sumit age=15

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