At a certain company, the average (arithmetic mean) number of years of experience is 9.8 years for the male employees and 9.1 years for the female employees. What is the ratio of the number of the company's male employees to the number of the company's female employees?
(1) There are 52 male employees at the company.
(2) The average number of years of experience for the company's male and female employees combined is 9.3 years.
Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
EACH statement ALONE is sufficient.
Statements (1) and (2) TOGETHER are NOT sufficient.
设男员工有x人,女员工有y人,则有等式9.8x+9.1y/x+y,算出来0.5x=0.2
看错求什么
这题得注意求的什么
注意问的是x/y
完全看不懂
一不小心就掉进坑了
只用条件二就可以完全推出来了
(9.8m+9.1f)/(m+f)=9.3
化简一下就可以得到m/f
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