GMAT數(shù)學(xué)精華題型解析

　　GMAT數(shù)學(xué)考試常見(jiàn)題型的解題技巧有哪些呢?以下將為大家深入分析GMAT數(shù)學(xué)考試常見(jiàn)題型的解題策略和技巧，希望能夠?yàn)榭忌鷤鋺?zhàn)GMAT數(shù)學(xué)考試帶來(lái)幫助。

　　114. 11816-!-item-!-187;#058007868

　　Henry purchased 3 items during a sale. He received a 20 percent discount off the regular price of the most expensive item and a 10 percent discount off the regular price of each of the other 2 items. Was the total amount of the 3 discounts greater than 15 percent of the sum of the regular prices of the 3 items?

　　 The regular price of the most expensive item was $50, and the regular price of the next most expensive item was $20.

　　 The regular price of the least expensive item was $15.

　　【答案】A

　　135. 13860-!-item-!-187;#058009754

　　During a one-day sale, a store sold each sweater of a certain type for $30 more than the stores cost to purchase each sweater. How many of these sweaters were sold during the sale?

　　 During the sale, the total revenue from the sale of these sweaters was $270.

　　 During the sale, the store sold each of these sweaters at a price that was 50 percent greater than the stores cost to purchase each sweater.

　　【答案】C

　　139. 14108-!-item-!-187;#058009811

　　A set of 15 different integers has a median of 25 and a range of 25. What is the greatest possible integer that could be in this set?

　　 32

　　 37

　　 40

　　 43

　　 50

　　【答案】 D

　　【思路】

　　Range定義=最大值-最小值

　　題目問(wèn)說(shuō)哪個(gè)最有可能是最大值,所以從最大的先推推看,遇到直接做起來(lái)難的題目，從答案分析

　　E)Max:50,range25代表Min=50-25=25 ==可是25又是中位數(shù),所以不可能!!

　　D)Max:43,range25代表Min=43-25=18

　　列舉驗(yàn)證一下: 18 19 20 21 22 23 24 25 ........43

　　總共15個(gè),所以中位數(shù)左邊應(yīng)該有7個(gè)

　　剛好25也是中位數(shù),所以成立!!

　　因?yàn)閞ange25,各選項(xiàng)間距為

　　=

　　由於15個(gè)不同的數(shù)字,此外,中位數(shù)為25=只有D選項(xiàng)符合

　　------------------------------------------------------------------------------------------------------------------------------------

　　142. 14580-!-item-!-187;#058010013 分頁(yè)標(biāo)題#e#

　　The rate of a certain chemical reaction is directly proportional to the square of the concentration of chemical A present and inversely proportional to the concentration of chemical B present. If the concentration of chemical B is increased by 100 percent, which of the following is closest to the percent change in the concentration of chemical A required to keep the reaction rate unchanged?

　　 100% decrease

　　 50% decrease

　　 40% decrease

　　 40% increase

　　 50% increase

　　【答案】D

　　174. 17336-!-item-!-187;#058011114

　　In the xy-plane, what is the y-intercept of line l

　　 The slope of line l is 3 times its y-intercept.

　　 The x-intercept of line l is -一定要代入后看是否能可以解常考陷阱

　　【答案】E

　　177. 17595-!-item-!-187;#058011159

　　If x and y are positive integers, what is the value of xy ?

　　 The greatest common factor of x and y is 10.

　　 The least common multiple of x and y is 180.

　　【答案】C

　　兩個(gè)數(shù)的乘積=其最大公約數(shù)最小公倍數(shù)

　　以上為大家推薦了一些GMAT數(shù)學(xué)試題的使用解題技巧，考生不妨從中借鑒，通過(guò)針對(duì)性的練習(xí)來(lái)逐步掌握GMAT數(shù)學(xué)考試的解題技巧，從而在GMAT考試中發(fā)揮出更好的水平。

　　GMAT數(shù)學(xué)考試常見(jiàn)題型的解題技巧有哪些呢?以下將為大家深入分析GMAT數(shù)學(xué)考試常見(jiàn)題型的解題策略和技巧，希望能夠?yàn)榭忌鷤鋺?zhàn)GMAT數(shù)學(xué)考試帶來(lái)幫助。

　　114. 11816-!-item-!-187;#058007868

　　Henry purchased 3 items during a sale. He received a 20 percent discount off the regular price of the most expensive item and a 10 percent discount off the regular price of each of the other 2 items. Was the total amount of the 3 discounts greater than 15 percent of the sum of the regular prices of the 3 items?

　　 The regular price of the most expensive item was $50, and the regular price of the next most expensive item was $20.

　　 The regular price of the least expensive item was $15.

　　【答案】A

　　135. 13860-!-item-!-187;#058009754

　　During a one-day sale, a store sold each sweater of a certain type for $30 more than the stores cost to purchase each sweater. How many of these sweaters were sold during the sale?

　　 During the sale, the total revenue from the sale of these sweaters was $270.

　　 During the sale, the store sold each of these sweaters at a price that was 50 percent greater than the stores cost to purchase each sweater.

　　【答案】C

　　139. 14108-!-item-!-187;#058009811

　　A set of 15 different integers has a median of 25 and a range of 25. What is the greatest possible integer that could be in this set?

　　 32

　　 37

　　 40

　　 43

　　 50

　　【答案】 D

　　【思路】

　　Range定義=最大值-最小值

　　題目問(wèn)說(shuō)哪個(gè)最有可能是最大值,所以從最大的先推推看,遇到直接做起來(lái)難的題目，從答案分析

　　E)Max:50,range25代表Min=50-25=25 ==可是25又是中位數(shù),所以不可能!!

　　D)Max:43,range25代表Min=43-25=18

　　列舉驗(yàn)證一下: 18 19 20 21 22 23 24 25 ........43

　　總共15個(gè),所以中位數(shù)左邊應(yīng)該有7個(gè)

　　剛好25也是中位數(shù),所以成立!!

　　因?yàn)閞ange25,各選項(xiàng)間距為

　　=

　　由於15個(gè)不同的數(shù)字,此外,中位數(shù)為25=只有D選項(xiàng)符合

　　------------------------------------------------------------------------------------------------------------------------------------

　　142. 14580-!-item-!-187;#058010013 分頁(yè)標(biāo)題#e#

　　The rate of a certain chemical reaction is directly proportional to the square of the concentration of chemical A present and inversely proportional to the concentration of chemical B present. If the concentration of chemical B is increased by 100 percent, which of the following is closest to the percent change in the concentration of chemical A required to keep the reaction rate unchanged?

　　 100% decrease

　　 50% decrease

　　 40% decrease

　　 40% increase

　　 50% increase

　　【答案】D

　　174. 17336-!-item-!-187;#058011114

　　In the xy-plane, what is the y-intercept of line l

　　 The slope of line l is 3 times its y-intercept.

　　 The x-intercept of line l is -一定要代入后看是否能可以解常考陷阱

　　【答案】E

　　177. 17595-!-item-!-187;#058011159

　　If x and y are positive integers, what is the value of xy ?

　　 The greatest common factor of x and y is 10.

　　 The least common multiple of x and y is 180.

　　【答案】C

　　兩個(gè)數(shù)的乘積=其最大公約數(shù)最小公倍數(shù)

　　以上為大家推薦了一些GMAT數(shù)學(xué)試題的使用解題技巧，考生不妨從中借鑒，通過(guò)針對(duì)性的練習(xí)來(lái)逐步掌握GMAT數(shù)學(xué)考試的解題技巧，從而在GMAT考試中發(fā)揮出更好的水平。