This has to do with ratios. If the current width is 8 inches and he wants to have it 35in, you must multiply the length by the same amount to keep it proportional.
Step-by-step explanation:
14 gallons bought for $34.72
1 gallon bought for

=$2.48
The area is 864 square, or 6 square feet.
The answer would be 24 yards. This would be 24 because 3 feet equal one yard so 3/72 is 24 or 24•3.