Question

Mary has rehearsed her ballet solo for five and a half hours. A week from now, she wants to have rehearsed at least a total of nineteen and a half hours. If she rehearses for the same amount of time each day for the next 7 days, at least how many hours must she rehearse per day?

Answer 1

Answer:

2 hours per day

Step-by-step explanation:

Given : Mary has rehearsed her ballet solo for five and a half hours. A week from now, she wants to have rehearsed at least a total of nineteen and a half hours.

To Find : If she rehearses for the same amount of time each day for the next 7 days, at least how many hours must she rehearse per day?

Solution :

Mary has rehearsed her ballet solo = $5\frac{1}{2} =5.5 hours$

She wants to have rehearsed at least a total of $19\frac{1}{2} =19.5 hours$

So, hours left for rehearsel = 19.5-5.5= 14 hours

If she rehearses for the same amount of time each day for the next 7 days

So, she rehearsed each day = 14/7 = 2 hours

Hence  she must rehearse for 2 hours per day

Answer 2

The answer to this problem is 2