Your gas bill went up from $125 125 per month to $150 150 per month. what is the percent increase of your gas bill?

20%

Step-by-step explanation:

Hi, to answer this we have to write a proportion:

Since 125 original price, it was the 100% = 125/100

So, for 150= 150/x

Where x is the percentage for 150

125/100 = 150/x

x = 150/ (125/100)

x=120%

150 is 120% of the original price.

So:

120%-100% = 20%

The percent increase is 20%

Feel free to ask for more if needed or if you did not understand something.

step-by-step explanation:

answer: 8 years

step-by-step explanation:

the explanation is that in 8 years the child will be 20 and in 8 years the father will be 40 and 20 is half of 40.