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Sagot :
Since it is 100 minutes of stretching and scrimmaging, we can subtract the 10 minutes we know is stretching. 90 minutes is equal to 2/3 of the practice then. Divide by 2 and multiply by 3 to get the entire time of the practice or 135 minutes. However, you asked for it in hours, so we can subtract 120 minutes because this is 2 hours. 15 minutes is 1/4 of an hour. So practice took 2&1/4 hours. Hope that helps.
Answer:
Time for the entire practice is 2.25 or 2 1/4 hours
Step-by-step explanation:
According to the question the volley ball coach daily plan practice includes stretching , scrimmaging and she use the remaining practice time working on drills of specific skills.
let the entire time required for practice = y minutes
Stretching consumes 10 minutes, mathematically
stretching = 10 minutes
scrimmaging = 2/3 × y
Drills of specific skills = y - (2/3 × y) - 10 = 1/3 y - 10 minutes
On Wednesday she had
stretching + scrimmaging = 100 minutes
we all know her stretching daily timing is 10 minutes and scrimmaging timing is 2/3 × y
Therefore,
10 + 2/3 y = 100
100 - 10 = 2/3 y
90 = 2/3 y
multiply both sides by 3
90 × 3 = 2/3 y × 3
270 = 2 y
y = 135 minutes
since the answer is suppose to be in hours
60 minutes = 1 hour
135 minutes = ?
135/60 = 2.25 hours or 2 1/4 hours
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