GMAT Quantitative Reasoning Practice Test 3

Question : 5 of 100

Marks: +1, -0

A newly wed couple is designing their new house by purchasing 10 chairs, 3 desks, 3 televisions and 4 closets. If the price ratio between the new merchandise is 1:3:4:4, what fraction of the cost of the entire purchase was the cost of a deskand a closet?

$6 \/ 31$ .
$7 \/ 47$ .
5/28.
9/43.
11/45.

Validate

Solution:

Let

X

be the price of a single chair, normalize all the prices to the price of a chair.
The total price of the entire purchase is:

10 X+9 X+12 X+16 X=47 X

.
The specific purchase costs:

3 X+4 X=7 X

. The percent required is

7 \/ 47

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