Questions on Algebra: Polynomials, rational expressions and equations answered by real tutors!

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Question 152553: A man who weighs 175 pounds on earth weigh 28 pounds on the moon. How much would his 30 pound dog weigh on the moon?: A man who weighs 175 pounds on earth weigh 28 pounds on the moon. How much would his 30 pound dog weigh on the moon?
Answer by jim_thompson5910(9166) About Me  (Show Source):
You can put this solution on YOUR website!
we have this ratio 


weight of man on earth     weight of dog on earth
---------------------- = -------------------------
 weight of man on moon      weight of dog on moon


So this looks like

175/28=30/x


(175/28)*x=30 Multiply both sides by x


175*x=30*28 Multiply both sides by 28


175*x=840 Multiply


x=840/175 Divide both sides by 175


x=24/5 Simplify



So our answer is x=24/5 which is roughly x=4.8


So the dog would weigh about 4.8 pounds on the moon
Question 152553: A man who weighs 175 pounds on earth weigh 28 pounds on the moon. How much would his 30 pound dog weigh on the moon?: A man who weighs 175 pounds on earth weigh 28 pounds on the moon. How much would his 30 pound dog weigh on the moon?
Answer by Fombitz(1740) About Me  (Show Source):
You can put this solution on YOUR website!
Set up a ratio.
28 pounds is to 175 pounds as X pounds is to 30 pounds.
28/175=X/30
X=(28/175)*30
X=4.8
The dog would weigh 4.8 lbs.