题目
Salary S reduced by 10% = salary T
Salary T increased by 10% = salary w
选项
C.The two quantities are equal.
D.The relationship cannot be determined from the information given.
解析
设S为初始工资,因此令其为100
S = 100
随后工资降低10%,即 S = 0.90 = T
T = 0.90
工资T再提高10%,即 T = 0.90 + 10% = 0.99,记为W
W = 0.99
小结:
S = 100
T = 0.90
W = 0.99
问题:S和W哪个更大?
S > W
100 > 0.99
答案为A。