Question

The weight of an object on Venus is about 9/10 it's weight on Earth and the weight of an object on Mars is about 2/5 it's weight on Earth. What is the difference in the weight of a 170-pound person on Venus and Mars?

Answer 1

On Venus the person is 153 lbs and on Mars it is 102 lbs.The difference is 51 lbs

Answer 2

Answer:  85 pounds

Step-by-step explanation:-

Given : The weight of an object on Venus is about $\dfrac{9}{10}$ it's weight on Earth and the weight of an object on Mars is about $\dfrac{2}{5}$ it's weight on Earth.

When somebody weighs 170-pound , then his weight on Venus will be :_

$\dfrac{9}{10}\times17=153\text{ pounds}$

His weight on Mars will be :-

$\dfrac{2}{5}\times170=68\text{ pounds}$

Then , the difference  in the weight of a 170-pound person on Venus and Mars :-

$153-68=85$

Hence, the difference  in the weight of a 170-pound person on Venus and Mars = 85 pounds