SAT I 每日一问:2013年7月25日
作者:沪江英语
来源:CollegeBoard
2013-07-25 10:10
The Correct answer is B.
Explanation
From the information given, you can write the proportion cars is to hours as cars is to hours, where represents the number of hours the mechanic will take to install carburetors in cars. This gives , which simplifies to . Therefore, hours. Since hour is minutes, is hours minutes.