First, we subtract the two numbers.
72 - 42 = 30
Now we divide this to the original number.
30 / 42 = <span>0.71428571428
Multiply by 100:
</span><span>71.428571428
</span>
So the percent increase is approximately 71.43%
It should be five hours
1•3=3
3+2=5
5/3
3•(5/3)=15/3
15/3=5 hours
Answer:
-2 1/2 or -5/2
Step-by-step explanation:
