Question

A man spent 15 minutes every day feeding the pigs. He spent 3 minutes less in the evening than he did after breakfast. For how many minutes did the man fed the pigs each time?

Answer 1

the answer is 189mins

Answer 2

Let's call the time he spent feeding the pigs after breakfast
`b` and the time he spent feeding the pigs in the evening
`e`. Using the information in the problem, we can say that
`e = b - 3`, since he spent 3 minutes less than the amount of time at breakfast, which is
`b`.

We can also say that
`e + b = 15`, since he spent 15 minutes each day in total feeding the pigs. If we substitute in what we found for
`e`, then we can find the equation
`(b - 3) + b = 15`, which we can simplify, as shown below:

`(b - 3) + b = 15`

`2b - 3 = 15`

`2b = 18`

`b = 9`

We have found that he spent 9 minutes after breakfast feeding the pigs. We can find
`e` by substituting in what we found for
`b` into our earlier equation:

`e = b - 3`

`e = 9 - 3`

`e = 6`

He spent 9 minutes feeding the pigs after breakfast and 6 minutes feeding the pigs in the evening.