Question

Jerome studied math for 5/8 of an hour, grammar for 1/2 of an hour, science for 2/5 of an hour, and history for 3/10 of an hour. what was the total amount of time Jerome spent studying?

Answer 1

Answer: an hour and 49.5 minutes

Explanation:

1/2 = 5/10

2/5 = 4/10

5/10 + 4/10 + 3/10 = 12/10

12/10 = 144/120

5/8 = 75/120

75/120 + 144/120 = 219/120

219/120 = 1 99/120 = 1 49.5/60

hope this helps!

Answer 2

74.5 minutes

Turn every fraction denominator to 60 since those are minutes

5. 14.5

- ×7.5= -----

8. 60

`(1)/(2) * 30= (30)/(60)`

`(2)/(5) *12=(12)/(60)`

`(3)/(10) *6= (18)/(60)`

Add all of the numerators together for the total number of minute