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- What is Aman's present age, if after 20 years his age will be 10 times his age 10 years back?
Question 1:
What is Aman's present age, if after 20 years his age will be 10 times his age 10 years back? A. 6.2 years
B. 7.7 years
C. 13.3 years
Feedback Let Aman's present age be x
Aman's age before 10 years = (x - 10)
Aman's age after 20 years = (x + 20)
We are given that, Aman's age after 20 years (x + 20) is 10 times his age 10 years back (x – 10)
Therefore, (x + 20) = 10 (x – 10)
Solving the equation, we get x + 20 = 10x – 100
9x = 120, x = 13.3 years
Aman's age before 10 years = (x - 10)
Aman's age after 20 years = (x + 20)
We are given that, Aman's age after 20 years (x + 20) is 10 times his age 10 years back (x – 10)
Therefore, (x + 20) = 10 (x – 10)
Solving the equation, we get x + 20 = 10x – 100
9x = 120, x = 13.3 years
D. 10 years
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