Question 758061
The ratio of the weight of an object on Mars to the weight of an
 object on Earth is 0.4 to 1.
A- How much will a 7 ton rocket weigh on Mars?
{{{r/7}}} = {{{.4/1}}}
Cross multiply
r = .4(7)
r = 2.8 tons on Mars
:
B- How much will a 132 lb astronaut weigh on Mars?
{{{a/132}}} = {{{.4/1}}}
a = 132 * .4
a = 52.8 lb