Answer: the store charged $0.025 per inch
Step-by-step explanation:
A hardware store buys 300 feet of rope. We would convert 300 feet to inches. 12 inches make a foot. 300 feet will be 300×12 = 3600 inches
A costumer can buy 40 inches of rope for $1.60.
If 40 inches can be bought for $1.6
3600 inches will be bought for
(3600 × 1.6)/40 = 5760/40 = 144
So all the rope cost $144
All the rope is sold and the store makes a profit of $54. This means that the amount that the store paid for all the rope will be 144 - 54 = 90.
The store paid $90 for 3600 inches. The cost in dollar per inch will be
90/3600 = $0.025
