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SAT数学练习题内容八

2019-10-10 17:13:59来源:网络

  为了帮助大家高效备考SAT,新东方在线SAT频道为大家带来SAT数学练习题内容八,希望对大家SAT备考有所帮助。更多精彩尽请关注新东方在线SAT频道!

  解析:

  First you must realize that the sum of two 2-digit numbers cannot be more that 198 (99 + 99). Therefore in the given problem D must be 1. Now use trial and error to satisfy the sum 5A + BC = 143. A + C must give 3 in the units place, but neither can be 1 since all the digits have to be different. Therefore A + C = 13. With one to carry over into the tens column, 1 + 5 + B = 14, and B = 8. A + C + B + D = 13 + 8 + 1 = 22

  SAT数学练习题 4

  12 litres of water a poured into an aquarium of dimensions 50cm length , 30cm breadth, and 40 cm height. How high (in cm) will the water rise?

  (1 litre = 1000cm3)

  A. 6

  B. 8

  C. 10

  D. 20

  E. 40

  Correct Answer: B

  解析:

  Total volume of water = 12 liters = 12 x 1000 cm3. The base of the aquarium is 50 x 30 = 1500cm3. Base of tank x height of water = volume of water. 1500 x height = 12000; height = 12000 / 1500 = 8

  SAT数学练习题 5

  Six years ago Anita was P times as old as Ben was. If Anita is now 17 years old, how old is Ben now in terms of P ?

  A. 11/P + 6

  B. P/11 +6

  C. 17 - P/6

  D. 17/P

  E. 11.5P

  Correct Answer: A

  解析:

  Let Ben’s age now be B. Anita’s age now is A. (A - 6) = P(B - 6)

  But A is 17 and therefore 11 = P(B - 6). 11/P = B-6

  (11/P) + 6 = B

  以上就是关于“SAT数学练习题内容八”的内容,更多精彩内容,请关注SAT频道!

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