SOLUTION: if delia ran for 4/5 of an hour then biked 2/3 of an hour then swam 1/2 for an hour how long did she exercise in total show your work

Algebra ->  Percentage-and-ratio-word-problems -> SOLUTION: if delia ran for 4/5 of an hour then biked 2/3 of an hour then swam 1/2 for an hour how long did she exercise in total show your work      Log On


   

Question 1207259: if delia ran for 4/5 of an hour then biked 2/3 of an hour then swam 1/2 for an hour how long did she exercise in total show your work
Found 2 solutions by Theo, greenestamps:
Answer by Theo(13342) About Me  (Show Source):
You can put this solution on YOUR website!
4/5 * 6/6 + 2/3 * 10/10 + 1/2 * 15/15 equals:

24/30 + 20/30 + 15/30 equals:

(24 + 20 + 15) / 30 equals:

59/30 hours which is equal to 1.966666667 hours.

if you have converted everything to minutes, you would have gotten:

4/5 * 60 + 2/3 * 60 * 1/2 * 60 = 118 minutes / 60 = 1.966666667 hours.








Answer by greenestamps(13200) About Me  (Show Source):
You can put this solution on YOUR website!


4%2F5%2B2%2F3%2B1%2F2

Express each fraction using the least common denominator, which is 5*3*2 = 30.

%284%2F5%29%286%2F6%29%2B%282%2F3%29%2810%2F10%29%2B%281%2F2%29%2815%2F15%29
24%2F30%2B20%2F30%2B15%2F30
%2824%2B20%2B15%29%2F30
59%2F30

ANSWER: 59/30 hours, or 1 29/30 hours, or 1 hours 58 minutes