{"id":"gmat-free","timeLimitSec":635,"questions":[{"id":"gmf-001","section":"quant","q":"A retailer marks up the price of a jacket by 40% over its cost and then sells it at 25% off the marked price. The selling price is what percent greater than the cost?","options":["5%","10%","0%","15%"],"answer":0,"explain":"Take a cost of 100: the marked price is 140, and 25% off 140 is 105. That is 5% above cost; subtracting 25 from 40 gives the wrong 15%."},{"id":"gmf-002","section":"quant","q":"If 3x − 7 = 2x + 5, what is the value of (x − 2)/(x + 3)?","options":["2/3","1/2","3/5","5/7"],"answer":0,"explain":"Subtract 2x and add 7 to get x = 12. Then (12 − 2)/(12 + 3) = 10/15 = 2/3."},{"id":"gmf-003","section":"verbal","q":"Critical reasoningA city replaced its downtown parking meters with a smartphone payment app. In the six months after the change, downtown parking revenue fell by 18%. The finance director concluded that many drivers are now avoiding payment because the app is harder to use than the meters were.Which of the following, if true, most seriously weakens the finance director's conclusion?","options":["The app charges exactly the same hourly rates as the old parking meters did.","Several drivers over 70 told a local newspaper that they found the app confusing and wanted the city to bring back the old meters.","In the same six months a new light-rail line opened downtown, and the number of cars parked downtown fell by about 20%.","Parking officers wrote slightly more tickets for unpaid parking after the change."],"answer":2,"explain":"If about 20% fewer cars park downtown, an 18% fall in revenue is explained without any drivers avoiding payment. Confused drivers and more tickets, if anything, support the director."},{"id":"gmf-004","section":"verbal","q":"Reading comprehensionCities are often several degrees warmer than the surrounding countryside, an effect known as the urban heat island. Dark roofs and roads absorb sunlight during the day and release the heat at night, and the scarcity of trees removes the cooling that shade and evaporation from leaves would provide. Some cities have responded by painting roofs white, which keeps buildings cooler in summer. Critics point out that a white roof also stays cooler in winter, when the heat of a dark roof would have lowered heating bills. For that reason, white roofs pay off most in places with long, hot summers and mild winters.The passage suggests that white roofs are least likely to pay off in a city that has","options":["many trees along its streets","a large number of dark roads","long, hot summers and mild winters","short summers and long, cold winters"],"answer":3,"explain":"The passage says the winter cooling of a white roof raises heating bills, so the benefit is smallest where winters are long and cold. Long hot summers with mild winters is where they pay off most."},{"id":"gmf-005","section":"di","q":"Data sufficiency: decide whether the data in statements (1) and (2) are enough to answer the question. A yes/no question is answered when the answer is always yes or always no.What is the value of the integer n?
(1) n2 = 49
(2) n > 0Which is true of statements (1) and (2)?","options":["Statement (1) alone is sufficient, but (2) alone is not","Both together are sufficient, but neither alone is","Each statement alone is sufficient","Statement (2) alone is sufficient, but (1) alone is not"],"answer":1,"explain":"(1) allows n = 7 or n = −7, and (2) allows any positive integer. Together only n = 7 remains."}]}