kikis3127 Posted August 21, 2013 Share Posted August 21, 2013 I have my GRE exam coming up. ETS sent me a link with few quantitative tests. It says that these are real GRE questions. These tests have answers but no solution. Pl. help me solve the following questions: The price per pair of brand X socks is $2 and the price per pair of brand Y socks is $3. If there is no sales tax and a customer chooses only from among these two brands, what is the greatest number of pairs of socks that he can buy with exactly $25 ? 9 10 11 12 20 The price for each package of paper of type A, including taxes, is $3 and the price for each package of paper of type B, including taxes, is $4. What is the greatest number of packages of paper a person can buy with exactly $65 ? 17 18 19 20 21 Thanks in advance. Quote Link to comment Share on other sites More sharing options...
gbd97 Posted September 14, 2013 Share Posted September 14, 2013 Hi, We are asked to get the maximum number of things within a fixed amount of money. To get the maximum number of products, we have to maximize the number of products of lowest price. For 1: cheaper price is 2$ and we have to buy the products exactly with 25$. 25/2=12.5 , If we buy 12 pair brand X socks, 12*2=24, we have 1$ left. But that cant be happened!! If we buy 11 pair brand X socks 11*2=22, we have left 3$ buy which we can buy a pair of brand y socks. So total 11+1 =12 pair Answer:12(D) For 2: similar to the 1st one: 65/3=21+something...., so 21*3=63, 2$ left; so it is not acceptable!! next,20*3=60, 5$ left, we can not buy Product B with 5 $ ;so it is not acceptable 19*3=57$, 8$ left by which we can buy 2 package of B, so total 19+2=21(E) Quote Link to comment Share on other sites More sharing options...
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