A person’s age is 125% of what it was one decade ago, but 83(1/3)% of what it will be after one decade. What is his current age? [1 decade = 10 years] Choose the correct choice from the following answers:
A) 50 years
B) 60 years
C) 30 years
D) 70 years
E) 80 years
A   50 years   Let, current age is A years.   Then, 125% of (50 years – 10) = 50 years   and, 83(1/3)% of (50 years + 10) = 50 years   Therefore 125% of (50 years-10) = 83(1/3)% of (50 years+10)   or, (5/4) (50 years – 10) =(5/6)(50 years+10)   or, (5/4)50 years -(5/6)50 years = (50/6)+(50/4)   or, (550 years/12)= (250/12) or,   50 years=50 years.
<result>A</result>
A person’s age is 125% of what it was one decade ago, but 83(1/3)% of what it will be after one decade. What is his current age? [1 decade = 10 years]