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Correct answer: Option I
Solution: let the age of Karan and Ritu be a and b years for now
Then, a-b = 45 years ------------ first equation
And a- 10 = 10(b-10)
= a-10 = 10b- 100
= a – 10b = -100 + 10
= a – 10 b = -90------------- second equation
Solving, both the equation
Apply (1) – (2) that is
a-b= 45
a – 10b = -90
9b = 135
B = 15
Substitute b value in equation 1
= a = 15+45 = 60
Hence Karan is 60 and Ritu is 15