Question

Five years ago Ram's age was four times than Rahul's age. After 15 years Ram's age will be two times than Rahul's age, then present ages of Ram and Rahul are​

Answer 1

Answer:

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Step-by-step explanation:

so now let present age of ram be x years and that of rahul be y years

so according to first condition

(x-5)=4(y-5)

ie x-4=4y-20

so x=4y-15 (1)

according to the second condition

x+15=2(y+15)

so x+15=2y+30

ie x=2y+15 (2)

equate both equations

we get

2y+15=4y-15

so 2y=30

so y=15

substitute value of y in any of two equations

we get x=45

hence present age of ram is 45 years and that of rahul is 15 years

Answer 2

Answer:

This problem can be solved using two linear questions

Let Rahul’s age be x years, and Rohan’s age be y years

Then,

x = y + 15

x - y = 15 … (i)

(x - 5) = 3(y - 5)

x - 5 = 3y - 15

x - 3y = -10 … (ii)

Subtracting (ii) from (i)

x - y - x + 3y = 15 + 10

2y = 25

y = 12.5

Substituting y = 12.5 in (i)

x - 12.5 = 15

x = 27.5

Therefore, Rahul is 27 and a half years old.

Step-by-step explanation:

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