Answer:
brainly.com/question/5871139
Step-by-step explanation:
this person explains
7 students play an instrument.
Calculation:
35=100%
20%=[20×35]÷100
=7
8 hours is twice as many as 4:
Multiply the number of windows in 4 hours by 2:
32 x 2 = 64 windows in 8 hours
