Q17:
To be eligible for retirement benefits at the Omega Corporation, the sum of an employee’s age, in years, and the number of years of employment must be at least 70. If x, where x < 70, is a certain employee’s age when hired and y is the minimum number of years of employment required for the employee to be eligible for retirement benefits, which of the following equations represents the relationship between x and y ?
A. xy = 70
B. x + y = 70
C. 2x + y = 70
D. x + 2y = 70
E. 2x + 2y = 70
Answer: D我认为是B，雇员年龄与雇用期之和至少为70，所以x+ y = 70，是不是理解错了？
你看错题目了...再好好省下题.
To be eligible for retirement benefits at the Omega Corporation, the sum of an employee’s age, in years, and the number of years of employment must be at least 70. If x, where x < 70, is a certain employee’s age when hired and y is the minimum number of years of employment required for the employee to be eligible for retirement benefits, which of the following equations represents the relationship between x and y ?
A. xy = 70
B. x + y = 70
C. 2x + y = 70
D. x + 2y = 70
E. 2x + 2y = 70
Answer: D雇员的年龄a + 雇用期y = 70
雇员入职时是x岁，他是不能得到退休福利的，因为根据上式，且x<70，他的雇用期为0。
当这个雇员入职y年可以享受退休福利时，雇员的年龄a=x+y，即x+y+y=70
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