#1 7.1 years old
#2 7.8 years old
#3 87.4
#4 74
#5 7.4
Answer:
33.3%
Step-by-step explanation:
Let's say the percent change is x%. Then the equation is:
30 + x% * 30 = 40
Subtract 30 from both sides:
x% * 30 = 10
Divide by 30:
x% = 10/30 = 1/3
Remember that % simply means "out of 100", so:
x/100 = 1/3
Multiply both sides by 100:
x = (1/3) * 100 = 33.3%
<h2>
24 inches</h2>
Step-by-step explanation:
It is given that 
It is given that 


Hence the required width in inches is 24.