Carcass wrote:

How many positive integers· less than 20 are equal to the sum of a positive multiple of 3 and a positive multiple of 4 ?

(A) Two

(B) Five

(C) Seven

(D) Ten

(E) Nineteen

We can

list and count the possible outcomes

3 + 4 = 7

2(3) + 4 = 10

3(3) + 4 = 13

4(3) + 4 = 16

5(3) + 4 = 19

3 + 2(4) = 11

3 + 3(4) = 15

2(3) + 2(4) = 14

2(3) + 3(4) = 18

3(3) + 2(4) = 17

There are 10 possible outcomes.

Answer: D

Cheers,

Brent

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Brent Hanneson – Creator of greenlighttestprep.com

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