Question

over the weekend, Ed spent 1 1/4 hours doing his math homework and 1 3/4 hours doing his science project. Altogether, how much time did Ed spend doing homework over the weekend?

Answer 1

3 hours

Explanation:

We have that,

Time spent by Ed to do math homework =
`1(1)/(4)` =
`(5)/(4)` hours.

Time spent by Ed to do science homework =
`1(3)/(4)` =
`(7)/(4)` hours.

Thus, total time spent by Ed = Time for math + Time for science

i.e. Total time spent by Ed =
`(5)/(4)` +
`(7)/(4)`

i.e. Total time spent by Ed =
`(12)/(4)`

i.e. Total time spent by Ed = 3 hours.

Hence, the time spent by Ed doing his homework is 3 hours.

Answer 2

You have to add 1 1/4 + 1 3/4. Since they have common denominators you can just add all the numbers, 1+1=2, 1+3=4 since 4/4 is equal to one, you would add a one to the 2, so the answer would be 3. So Ed spent 3 hours doing homework during the weekend.