Question

The weight of an object on Mars varies directly with its weight on earth.An object that weighs 50 pounds on mars weighs 150 pounds on earth.If an object weighs 120 pounds on earth write and solve a direct variation equation to find how much a object would weigh on mars

Answer 1

Divide 120 by 3 cause if something weighs 50 on Mars you multiply 3

Answer 2

Hence, the answer is 40 pounds.

Explanation:

An object that weighs 50 pounds on mars weighs 150 pounds on earth.

Let the object weighing 120 pounds on Earth, weighs x pounds on Mars.

We can solve this equation as :

`(50)/(150) =(x)/(120)`

=>
`150x=50*120`

x = 40 pounds

Hence, the answer is 40 pounds.

Or we can also solve this as :

150 pounds on Earth weighs 50 pounds on Mars.

1 pound weighs =
`(50)/(150)` pounds on Mars

And 120 pounds will weigh =
`(50)/(150)*120=40` pounds on Mars.