Question

Professor Juwana spent 3/5 of an hour correcting 6 papers. At this rate, how many hours will it take him to correct 30 papers?

Answer 1

180 minutes or 3 hours

Answer 2

Answer:

3 hours

Step-by-step explanation:

Given: Professor Juwana spent 3/5 of an hour correcting 6 papers.

To Find: At this rate, how many hours will it take him to correct 30 papers.

Solution:

Time taken by Juwana to correct $6$ papers $=\frac{3}{5}\text{hours}$

Time taken by Juwana to correct $1$ paper $=\frac{\frac{3}{5}}{6}\text{hours}$

                                                        $\frac{3}{30}$ $\text{hours}$

                                                        $\frac{1}{10}\text{hours}$

let number of paper to be correct by Juwana $=\text{x}$

    time taken by Professor Juwana to correct $\text{x}$ papers

                                        $=\frac{1}{10}\text{x}$

Total number of papers to be corrected $=30$

                                                $=30\times\frac{1}{10}$

                                                $3$ $\text{hours}$

Professor Juwana will take $3$ $\text{hours}$ to correct $30$ papers