nycgirl212 wrote:

Official Guide for GMAT Quant Review 2016

Practice Question

Question No.:9

Page: 63

Difficulty:

There are five sales agents in a certain real estate office. One month Andy sold twice as many properties as Ellen, Bob sold 3 more than Ellen, Cary sold twice as many as Bob, and Dora sold as many as Bob and Ellen together. Who sold the most properties that month?

a) Andy

b) Bob

c) Cary

d) Dora

e) Ellen

A = 2E

B = E + 3

C = 2B

D = B + E

E

In problems such as this one, if you can make one variable equal to 100, it makes things simple.

(Here, the base variable does not

have to be 100 because there are no percentages involved. I use 100 consistently because it's versatile.)

Once written out as above:

1) every variable is defined by B and/or E; but

2) B is defined by E

Let E = 100

A = 2E = 200

B = E + 3 = 103

C = 2B = 206

D = B + E = 203

C, Cary, sold the most properties.

Answer C

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