If it takes Daniel 9 hours to clean an office building and it tak

您还没有登录，登录以后才可以查看答疑和进行提问。

试题详情

If it takes Daniel 9 hours to clean an office building and it takes Mark 6 hours, how long would it take the two of them, working together, to clean the building?

A、3 hours
B、3 hours 36 minutes
C、4 hours 45 minutes
D、6 hours
E、7 hours 30 minutes

答案：B

专业教师答疑

最新

提问

还没有人问到这里。

问个问题

答疑小程序

最热提问

Problem Solving
Which of the following equals its reciprocal?Indic......
Reading Comprehension
In the context in which it appears, "dearth" most ......
Quantitative Comparison
A deck of n cards contains exactly k marked cards.......
Reading Comprehension
In the passage, the author is primarily concerned ......
Text Completion
In medieval Europe, watermills were more (i)_____ ......
Sentence Equivalence
Biologists believe that birds descended from dinos......
Reading Comprehension
According to the passage, some abstract universal ......
Quantitative Comparison
n is an integer, and $$n^2$$......

试题详情

专业教师答疑 最新 提问

问个问题

答疑小程序

最热提问

专业教师答疑

最新

提问