It costs a family $324 to buy a 10-ft-by-12-ft rug. at this rate, what will it cost them to buy a 15-ft-by-18-ft rug?

Area of the rug the family bought = 10 x 12 = 120 ft²

120 ft² cost $234, find the cost of 1 ft²

⇒ 120ft² = $324

⇒ 1ft² = $324 ÷ 120 = $2.70

Area of the new rug = 15 x 18 = 270 ft²

1 ft² = $2.70, find the cost of 270 ft²

⇒ 1 ft² = $2.70

⇒ 270 ft² = 270 x $2.70 = $729

The 15-ft by 18-ft rug will cost $729

answer: if you weigh 60 pounds on earth, on the moon you will weigh about 10 pounds. if you weigh 120 pounds on earth, you will weigh about 20 pounds on the moon. since weight is caused by the mass of two objects that are near each other, the bigger the objects, the more the force of gravity.

step-by-step explanation: if you weigh 60 pounds on earth, on the moon you will weigh about 10 pounds. if you weigh 120 pounds on earth, you will weigh about 20 pounds on the moon. since weight is caused by the mass of two objects that are near each other, the bigger the objects, the more the force of gravity.