B I think I don’t really know
Answer:
$30
Step-by-step explanation:
Calculate the mark up
12*150/100=18 dollars
Add the mark up to original price
$12+$18=$30
Answer:
4:25
Step-by-step explanation:
Given that,
r₁ = 15 inches, r₂ = 6 inches
The area of the cylinder is given by :

The ratio of surface areas of two cylinders,

Hence, the required ratio is 4:25.
To do this you have to divide 135 miles by 5 hours. You will get the answer of 27 miles per hour.
I got the answer of 6127.731 hope this works out for you.