The answer is 12. How did I get it?

< - - - - -- - - - - - - - - - - - - - - - - - - >
A B C

AC = 21 (the whole line adds up to 21)
AB = 9 (half of the line is 9)
BC = AC-AB

21- 9 = 12 so BC is 12

7 0

3 years ago

It took Lou 2 1/2 gallons of paint to paint one fence. How many gallons to paint six fences that are small in size

rusak2 [61]

Answer:

15 gallons to paint six fences that are small in size.

Step-by-step explanation:

Unit rate defined as the rates are expressed as a quantity 1 such as 3 miles per hour or 5 meter per seconds.

As per the statement:

It took Lou $2\frac{1}{2}$ gallons of paint to paint one fence.

$\text{Unit rate per fence}= \frac{\text{Number of gallons of paint}}{\text{number of fences}}$

Substitute the given value we have;

$\text{Unit rate per fence}= \frac{\frac{5}{2} }{1} = \frac{5}{2}$ gallons.

We have to find how many gallons to paint six fences that are small in size.

By definition of unit rate;

$\text{Number of gallons to paint 6 fences}= \text{Unit rate per fence} \times 6$

Substitute the given values we have;

$\text{Number of gallons to paint 6 fences}= \frac{5}{2} \times 6 = 5 \times 3 = 15$

Therefore, 15 gallons to paint six fences that are small in size.

3 0

2 years ago