GMAT Quantitative Reasoning Practice Test 1

Question : 30 of 100

Marks: +1, -0

Kenny is three times older than Bob. In

P

years he will be twice older than Bob will be

Q

years later. Which of the following represents Kenny's age comparing to Bob's? (If

X

= Kenny's age)

Solution:

X

is Kenny's age.

X / 3

is Bob's age. Answer "

(X+P) / 2=X / 3+P+Q

" is equivalent to

(X+P)=2(X / 3+P+Q)

, which means that in

P

years,

X+P

is 2 times

(X / 3+P)

plus

Q

years.

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