GMAT Quantitative Reasoning Practice Test 1

Question : 74 of 100

Marks: +1, -0

A case of 12 rolls of paper towels sells for

\$ 9

. The cost of one roll sold individually is

\$ 1

. What is the percent of savings per roll for the 12 -roll package over the cost of 12 rolls purchased individually?

Solution:

If sold by the case, each individual roll cost

\$ .75

\;{\$ 9.00}/{12}=0.75

To find the percent of savings, compare the savings to the cost of a roll sold individually.

\;{1.00-0.75}/{1.00}=\;{0.25}/{1.00}=0.25=25 \%

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