SOLUTION: top running speed of a cheetah is double the top running speed of a jackal. The top running speed of an elk is 10 mph faster than that of a jackal. If each of these three animals c

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Question 928699: top running speed of a cheetah is double the top running speed of a jackal. The top running speed of an elk is 10 mph faster than that of a jackal. If each of these three animals could run at top speed for an hour, they could run a combined distance of 150 miles. What is top running speed of each of these animals?
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
RT=D using rate miles per hour.

r for the jackel's speed;
The elk's speed is r+10;
The cheetah's speed is 2r.

Everybody is moving for 1 hour. Sum of their distances , 150 miles.
%282r%2B%28r%2B10%29%2Br%29%2A1=150
4r%2B10=150
4r=140
r=140%2F4
highlight%28r=35%29 the JACKEL.

That value means, the cheetah goes 70 mph and elk goes 45 mph.