Question

Casey has 5/6 left of a section of sidewalk to clean. If he can clean 5/18 of a section in 1 minute, how long will it take him to clean what is left?

Answer 1

Answer:

Casey will take 3 minutes to clean $\frac{5}{6}$ part of the section.

Step-by-step explanation:

∵ Casey takes the time to cleans $\frac{5}{18}$ of a section = 1 minute

∴ He will take the time to clean complete section = $\frac{1}{\frac{5}{18} }$

                                                                                  = $1\times \frac{18}{5}$

                                                                                   = 3.6 minutes

Now time taken to clean $\frac{5}{6}$ part of the section = $\frac{5}{6}\times 3.6$

                                                                            = 3 minutes

Therefore, left part of the section will be cleaned by Casey in 3 minutes.