78 gallons is the same as 312 quarts
Answer:
50 miles per hour
Step-by-step explanation]
300/6=50/1
Answer:

You don't technically need the ( ) around the 2n, but I included them to avoid confusion.
X, y - the numbers
The sum of the two numbers is 9.

If one number is subtracted from the other, the result is 3.

Solve the system of equations:

The numbers are 6 and 3.
Given that the metal strip is being installed around a bench that 6ft long 2ft wide. The metal required will be given by:
P=4(L+W)
=4(6+2)
=4(8)
=32 ft
Therefore we conclude that we need a metal strip that is 32ft long