Question

The weight of an object on the planet Jupiter varies directly with the weight of the same object on Earth. An object that weighs 90 pounds on Jupiter will weigh 36 pounds on Earth A rock weighs 96 pounds on Earth. How much does it weigh on Jupiter?

A 25 lb
B 360 lb
C 38 lb
D 240 lb​

Answer 1

To find the weight of an object on Jupiter, you multiply its weight on Earth by the ratio of weights between Jupiter and Earth, which is 2.5. A rock weighing 96 pounds on Earth would weigh 240 pounds on Jupiter.

Step-by-step explanation:

The weight of an object on Jupiter varies directly with its weight on Earth. This means there is a constant ratio between the weight of an object on Earth and its weight on Jupiter. Given that an object weighing 90 pounds on Jupiter would weigh 36 pounds on Earth, we can calculate this ratio: 90 lbs on Jupiter / 36 lbs on Earth = 2.5. So, for every pound on Earth, an object would weigh 2.5 pounds on Jupiter.

To find the weight of a rock that weighs 96 pounds on Earth when it is on Jupiter, we simply multiply the weight by the ratio: 96 lbs on Earth * 2.5 = 240 lbs on Jupiter. Therefore, the correct answer is D: 240 lb.