Carlos wants to practice piano for 2 hours each day. He practices for [tex]\frac{3}{4}[/tex] hour before school and [tex]\frac{7}{10}[/tex] hour after school.

1. How many hours has he practiced?
2. How many hours until he meets his goal?

he has practiced 9/20 hours and must still practice 11/20 hours

Answered by evaloveskitties | 2024-06-10

He needs to practice an additional 33 minutes to meet his 2-hour daily practice goal.
The student Carlos wants to practice piano for a total of 2 hours each day. He practices for 3/4 hour before school and 7/10 hour after school. To calculate the total hours he has practiced, we convert these fractions to have a common denominator and then add them together:
3/4 hour = 15/20 hour
7/10 hour = 14/20 hour
Adding these together:
15/20 hour + 14/20 hour = 29/20 hour
Since there are 20/20 hours in one full hour, Carlos has practiced:
29/20 hours = 1 hour and 9/20 hour, or 1 hour and 27 minutes.
To find out how many more hours he needs to meet his goal of 2 hours, we subtract the time he has already practiced from his goal:
2 hours - 1 hour and 27 minutes = 33 minutes
Therefore, Carlos needs to practice an additional 33 minutes to meet his 2-hour daily goal.

Answered by SagarSa | 2024-06-24

Carlos has practiced for 1.45 hours and needs an additional 0.55 hours (33 minutes) to meet his goal of 2 hours.
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Answered by evaloveskitties | 2025-01-06