Answer:
4 hours
Step-by-step explanation:
We need to find 10% of 40 hours:
10%*40
Convert 10% to a fraction, as I find it makes the math simpler. To do this, we can simplify put 10 over 100 as any percentage is that number over 100:
[tex]\frac{10}{100}*40[/tex]
Simplify the fraction:
[tex]\frac{1}{10}*40=\frac{40}{10}=4[/tex]
They spent 4 hours doing dress rehearsals
