Question

Susie spent 4 1/4 hours on Monday and 3 5/8 hours on Tuesday working on a history project. About how long did she spend working on the project?

Answer 1

4 1\4 +3 5\8
(4+3=7)
1\4+5\8=2+5=7\8
answer=7 7\8

Answer 2

As per the statement:

Susie spent time on Monday =
`4(1)/(4)` =
`(17)/(4)` hours

and

Susie spent time on Tuesday =
`3(5)/(8) = (29)/(8)` hours.

Total time she spend working on the history project =
`(17)/(4) + (29)/(8)`

Take LCM of 4 and 8 is, 8

⇒
`(34+29)/(8) = (63)/(8) = 7(7)/(8)` hours.

Therefore, total time did she spent working on the project is,
`7(7)/(8)` hours.