SAT数学Problem Solving练习题(36)
- 2017年07月27日13:45 来源:互联网
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Question 36: If a, b and c are consecutive integers, a < b < c, and a + b + c = 96, what is the value of b?
(a) 30
(b) 31
(c) 32
(d) 33
(e) 34
Solution: If a, b and c are consecutive numbers, b = a + 1 and c = a + 2.
Then, a + (a + 1) + (a + 2) = 96, so 3·a + 3 = 96.
a = (96 - 3)/3 = 31.
b = a + 1 = 32.