几道不甚理解的GMAT习题
①142页66题Afamilymadeadownpaymentof$75andborrowedthebalanceonasetofencyclopediasthatcos...
①142页66题
A family made a down payment of $75 and borrowed the balance on a set of encyclopedias that cost $400. The balance with interest was paid in 23 monthly payments of $16 each and a final payment of $9. The amount of interest paid was what percent of the amount borrowed?
正确答案是16%,但我算出来是13%(没有一个选项是这个答案)
②143页73题
Square RSTU shown above is rotated in a plane about its center in a clockwise direction the minimum number of degrees necessary for T to be in the position where S is now shown. The number of degrees through which RSTU is rotated is____
正确答案是270°。我看不懂“degrees necessary for T to be in the position where S is now shown”究竟是什么意思
③147页91题
In each production lot for a certain toy, 25 percent of the toys are red and 75 percent of the toys are blue. Half the toys are size A and half are size B. If 10 out of a lot of 100 toys are red and size A, how many of the toys are blue and size B?
正确答案是35,我算出来是30。按题目所说的意思,红色型号A的玩具,其数量应该是蓝色型号B的玩具的3倍才对。
④147页93题
What is the least possible product of 4 different integers, each of which has a value between -5 and 10, inclusive?
正确答案-3600,我算出的是-5040。因为按题意所算出的最小乘积便是-5×10×9×8=-3600,而题中问的是“最不可能”的答案。 展开
A family made a down payment of $75 and borrowed the balance on a set of encyclopedias that cost $400. The balance with interest was paid in 23 monthly payments of $16 each and a final payment of $9. The amount of interest paid was what percent of the amount borrowed?
正确答案是16%,但我算出来是13%(没有一个选项是这个答案)
②143页73题
Square RSTU shown above is rotated in a plane about its center in a clockwise direction the minimum number of degrees necessary for T to be in the position where S is now shown. The number of degrees through which RSTU is rotated is____
正确答案是270°。我看不懂“degrees necessary for T to be in the position where S is now shown”究竟是什么意思
③147页91题
In each production lot for a certain toy, 25 percent of the toys are red and 75 percent of the toys are blue. Half the toys are size A and half are size B. If 10 out of a lot of 100 toys are red and size A, how many of the toys are blue and size B?
正确答案是35,我算出来是30。按题目所说的意思,红色型号A的玩具,其数量应该是蓝色型号B的玩具的3倍才对。
④147页93题
What is the least possible product of 4 different integers, each of which has a value between -5 and 10, inclusive?
正确答案-3600,我算出的是-5040。因为按题意所算出的最小乘积便是-5×10×9×8=-3600,而题中问的是“最不可能”的答案。 展开
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1.问还的利息占借钱总额的百分之多少?借的钱是325,借的钱加利茄晌息一共还了377,利息是52(这个你应该已经算出来了),只是应该用52÷325=0.16,而不是377,因为他们借的是325。
2.我看不到图,只能猜。意思应该是说如果按照顺时针转,T转到S现在的位置,所需要的最少的度数。
3.根据题意,100个里面,红色25,蓝色75,A50,B50.因为红A是10个,那么对应红B=25-10=15(因为红色一共是25),篮A=50-10=40(因为A一共是50),所以篮颤芦锋B=100-10-15-40=35.
4。题意是最小的整数,而不是最不可能的整数。你算错了,正确答哗陵案是对的。
2.我看不到图,只能猜。意思应该是说如果按照顺时针转,T转到S现在的位置,所需要的最少的度数。
3.根据题意,100个里面,红色25,蓝色75,A50,B50.因为红A是10个,那么对应红B=25-10=15(因为红色一共是25),篮A=50-10=40(因为A一共是50),所以篮颤芦锋B=100-10-15-40=35.
4。题意是最小的整数,而不是最不可能的整数。你算错了,正确答哗陵案是对的。
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1、400-75=325 借的钱是325,自己压了75
23*16+9=377 一共还的钱是377
377-325=52 换的钱减去借的钱,利息
52/325=0.16 利息比借的钱
2、就是T要转到S所洞昌在位置,至少要转几度?我没书,自己耐颤闹试着画了一下,应该是三个90度。270度没错
3、10个红色A型号可以推出,15个红色B型号,继而推出,35个剩余的B型号是给蓝色的
4、问题中问的不是最不可能,问的是可能的最小乘积,昌罩least possible product
楼上握个手,跟我一样答案,分给他吧~~
23*16+9=377 一共还的钱是377
377-325=52 换的钱减去借的钱,利息
52/325=0.16 利息比借的钱
2、就是T要转到S所洞昌在位置,至少要转几度?我没书,自己耐颤闹试着画了一下,应该是三个90度。270度没错
3、10个红色A型号可以推出,15个红色B型号,继而推出,35个剩余的B型号是给蓝色的
4、问题中问的不是最不可能,问的是可能的最小乘积,昌罩least possible product
楼上握个手,跟我一样答案,分给他吧~~
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①借到的钱=400-75=325
还的钱=23*16+9=377
利息=377-325=52
所求=52/325=16%
②那句话的意思应该是要是S呈现现在的位置,需要T顺时针转过的最小角度。
因为看不见图,就不好多说了~
③所有的toy总共有四种类型,red A,red B,blue A,blue B
列个表比较方便
red blue
A ① ② 50
B ③ ④ 50
25 75
已知①=10,则②=50-10=40,从而④=75-40=35
④题干应该就是问得“所有可能的乘积中最小的一个”,不过有点歧义,下面有个讨论这道题的帖子,说可能是写机经的人chingelish了,大概应该是least value possible
PS:搜饥亏在百度或Google搜索框里直接粘题干,往往就肢竖会有惊世神喜呈现哦~
还的钱=23*16+9=377
利息=377-325=52
所求=52/325=16%
②那句话的意思应该是要是S呈现现在的位置,需要T顺时针转过的最小角度。
因为看不见图,就不好多说了~
③所有的toy总共有四种类型,red A,red B,blue A,blue B
列个表比较方便
red blue
A ① ② 50
B ③ ④ 50
25 75
已知①=10,则②=50-10=40,从而④=75-40=35
④题干应该就是问得“所有可能的乘积中最小的一个”,不过有点歧义,下面有个讨论这道题的帖子,说可能是写机经的人chingelish了,大概应该是least value possible
PS:搜饥亏在百度或Google搜索框里直接粘题干,往往就肢竖会有惊世神喜呈现哦~
参考资料: http://www.taisha.org/bbs/thread-942652-1-1.html
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