SOLUTION: Weight varies directly with gravity. A Mars lender weighed 767 pounds on Earth but only 291 pounds on Mars. Its Accompanying Mars rover weighed 155 pounds on Mars. How much did it

Algebra ->  Inverses -> SOLUTION: Weight varies directly with gravity. A Mars lender weighed 767 pounds on Earth but only 291 pounds on Mars. Its Accompanying Mars rover weighed 155 pounds on Mars. How much did it       Log On


   

Question 233014: Weight varies directly with gravity. A Mars lender weighed 767 pounds on Earth but only 291 pounds on Mars. Its Accompanying Mars rover weighed 155 pounds on Mars. How much did it weigh on Earth? Round your answer to the nearest pound.
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
Weight varies directly with gravity.
A Mars lender weighed 767 pounds on Earth but only 291 pounds on Mars.
Its Accompanying Mars rover weighed 155 pounds on Mars.
How much did it weigh on Earth? Round your answer to the nearest pound.
:
Use a ratio equation, let x = Rover weight on earth
:
291%2F767 = 155%2Fx
Cross multiply
291x = 155 * 767
:
291x = 118885
x = 118885%2F291
x = 408.539 ~ 409 lb on earth
:
:
Check with calc
291/767 = .379
155/409 = .379