12% of 72 is:
=12×72/100
=8.64
So the 12% of 72 is 8.64 is your answer.
Answer:
The miles-per-gallon rating of this car is 20.83.
Step-by-step explanation:
This question can be solved by a rule of three.
What is the miles-per-gallon rating of this car?
How many miles for 1 gallon?
4.8 gallons are used for 100 miles. So
4.8 gallons - 100 miles
1 gallon - x miles
![4.8x = 100](https://tex.z-dn.net/?f=4.8x%20%3D%20100)
![x = \frac{100}{4.8}](https://tex.z-dn.net/?f=x%20%3D%20%5Cfrac%7B100%7D%7B4.8%7D)
![x = 20.83](https://tex.z-dn.net/?f=x%20%3D%2020.83)
The miles-per-gallon rating of this car is 20.83.
Answer:
1. c 2. a 3. b
Step-by-step explanation:
The best way to prove these results are the right ones is by multiplying diagonally :
1. 1/3 = 4/12 -----> 1 . 12 = 12 ; 3 . 4 =12
2. 1/2 = 3/6 ------> 1 . 6 = 6 ; 2 . 3 = 6
3. 2/5 = 6/15 -----> 2 . 15 = 30 ; 5 . 6 = 30
The results of the multiplications must be the same if the fractions are equivalent.