GMAT Practice Test 6

Question 1

A tank is 3/8 full of water. After 15 gallons are added, the tank becomes 3/4 full. What is the tank's total capacity, in gallons?

Accepted Answer

40 gallons

Answer

24 gallons

Answer

45 gallons

Answer

60 gallons

Answer

72 gallons

Question 2

A caterer's total charge for an event equals a fixed booking fee plus a constant fee per guest. What is the caterer's total charge for an event with 50 guests?

(1) An event with 20 guests was charged $640 in total.
(2) An event with 35 guests was charged $1,000 in total.

Accepted Answer

BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.

Answer

Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.

Answer

Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.

Answer

EACH statement ALONE is sufficient.

Answer

Statements (1) and (2) TOGETHER are NOT sufficient.

Question 3

The city of Harrow recently required every newly constructed office tower to install fritted glass, a patterned glass that independent studies show reduces bird collisions by more than half compared with ordinary clear glass. Yet in the two autumn migration seasons since the rule took effect, the number of dead migratory birds found at the base of newly built towers has been no lower than the number found at the base of towers completed before the rule. Wildlife officials are puzzled, because every new tower fully complies with the fritted-glass requirement.

Which of the following, if true, most helps to resolve the apparent discrepancy?

Accepted Answer

The office towers built after the rule are, on average, far taller and enclose much more total glass surface than the towers built before it.

Answer

Fritted glass is substantially more expensive to manufacture than ordinary clear glass.

Answer

The population of migratory birds passing through Harrow has declined slightly over the past decade.

Answer

The fritted glass installed on the new towers meets the exact specifications used in the independent collision studies.

Answer

Bird collisions with glass occur most frequently during the autumn migration season.

Question 4

A jacket is on sale for $68 after a 20% discount off its original price. What was the original price of the jacket?

Accepted Answer

$85

Answer

$72

Answer

$80

Answer

$90

Answer

$102

Question 5

Northgate University plans to convert all of its scholarly journals to open access: it will drop subscription fees and instead charge each author a fee for every accepted paper. Administrators reason that because anyone will then be able to read Northgate's research without paying, the readership of that research will grow. They conclude that the switch will therefore raise the global citation impact of Northgate's published work.

The administrators' conclusion depends on which of the following assumptions?

Accepted Answer

The author fee will not deter a substantial portion of researchers from submitting their highest-quality work to Northgate's journals.

Answer

Open-access journals are generally regarded as less prestigious than subscription-based journals.

Answer

Every researcher who reads a Northgate article will go on to cite it.

Answer

Northgate currently earns more revenue from subscriptions than it will earn from author fees.

Answer

Other universities will eventually adopt open-access models for their own journals.

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GMAT Practice Test 6

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