Your weight on Mars varies directly with your weight on Earth. A person weighing 125 lbs on Earth weights 47.25 lbs on Mars, since Mars has less gravity. If you weigh 155 lbs on Earth, how much will you weigh on Mars?

Question

5788 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2017-02-12T14:37:22

If you weight 155 lbs on Earth you would weigh 58.59 lbs on Mars

We can right this as a ratio: (weight on Mars)/(weight on Earth)

Let's call the weight on Mars we are looking for #w#. We can now write:

#47.25/125 = w/155#

We can now solve for #w# by multiplying each side of the equation by #color(red)(155)#

#color(red)(155) xx 47.25/125 = color(red)(155) xx w/155#

#7323.75/125 = cancel(color(red)(155)) xx w/color(red)(cancel(color(black)(155)))#

#58.59 = w#

#w = 58.59#