QUESTION: 253

A 75-liter solution of cool-drink is made from 8% jasmine water. If 3 liters of jasmine and 12 liters of water were added to the solution, what percent of the solution is jasmine?

10.3%.
11.5%.
10%.
12.2%.
12%.

Answer(s): C

Explanation:

8% of the solution is made of jasmine, 8% of 70 is 6 liters.
If 3 liters of jasmine and 12 liters of water are added, the amount of the jasmine is 9 liters and the percent of the jasmine out of the entire solution is ((9)/(75 + 15) = (9/90) = 10%.

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QUESTION: 254

A 340-liter solution of Kola is made from 88% water, 5% concentrated Kola and the rest is made from sugar. If 3.2 liters of sugar, 10 liter of water and 6.8 liters of concentrated Kola were added to the solution, what percent of the solution is made from sugar?

6%.
7.5%.
9.2%.
10.5%.
11%.

Answer(s): B

Explanation:

(100% - 88% - 5% = 7%) of the solution is made from sugar, which is (0.07 x 340 = 23.8 liters).
3.2 liters of sugar were added to the solution, so there are 27 liters of sugar in the solution. The total volume of the solution is: 340 + 3.2 + 10 + 6.8 = 360 liters.
(27 / 360 = 3/40), which is 7.5% percent.

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QUESTION: 255

If the sum of six numbers is between 135 and 164, then the average (arithmetic mean) of the six numbers could be which of the following?

15.4.
20.5.
25.5.
31.25.
32.5.

Answer(s): C

Explanation:

Define X as the sum of all the six numbers, 135 < X < 164.
The average of the six numbers, using the average formula, is X/6.
Divide both sided of the equation by 6: 135/6 < X/6 < 164/6 22.5 < X/6 < 27.33. The average has to be in that range and therefore the only answer could be C.

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QUESTION: 256

A M.A.S (Most Affordable Speed) is defined as the speed where the fuel consumption of a car is the lowest. The average family car consumes 3 liters of fuel per 36 kilometers at the M.A.S with only one passenger (the driver). A pickup truck consumes twice as much as a family car does. Assuming the fuel consumption of both cars rises by % of the original consumption for each additional passenger, how many km per litter would a pickup truck do if the driver has three additional passengers?

10 km.
5.8 km.
6 km.
5.4 km.
4 km.

Answer(s): D

Explanation:

This is a question with a lot of dispensable text, it teaches us to focus on relevant information only. A family car consumes 1 liter for 12 Km, a pickup truck consumes twice as much, 1 liter for 6 Km. There are 3 additional passengers so the consumption rises by 10% .

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Free GMAT SECTION 2: QUANTITATIVE Exam Braindumps (page: 64)

QUESTION: 253

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QUESTION: 254

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QUESTION: 255

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QUESTION: 256

Explanation: