Respuesta :
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 = [tex]5\frac{1}{2} =5.5 hours[/tex]
She wants to have rehearsed at least a total of [tex]19\frac{1}{2} =19.5 hours[/tex]
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
