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

3 hours

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
`=(3)/(5)\text{hours}`

Time taken by Juwana to correct
`1` paper
`=((3)/(5))/(6)\text{hours}`

`(3)/(30)`
`\text{hours}`

`(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

`=(1)/(10)\text{x}`

Total number of papers to be corrected
`=30`

`=30*(1)/(10)`

`3`
`\text{hours}`

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