Kristi jogged for 3/5 of an hour, swam for 1/2 of an hour, and rode her bicycle for

[shhrewd]

3/5 + 1/2 + 3/4
Common denominator = 20
3/5 = 12/20
1/2 = 10/20
3/4 = 15/20

12/20 + 10/20 + 15/20
37/20

1 17/20 h

Answer B

 

[Cervantes Rayne]

3/4 of an hour.? How long did she exercise?
A) 9/40 h B) 1 17/20 h C) 1 7/20 h D) 7/11 h

 

[shhrewd]

3/5 + 1/2 + 3/4
Common denominator = 20
3/5 = 12/20
1/2 = 10/20
3/4 = 15/20

12/20 + 10/20 + 15/20
37/20

1 17/20 h

Answer B