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Let r be the rate of the slower jet; then the rate of the faster jet is (r+15) mph.
The total separating distance is
5r + 5*(r+15),
and it is equal to 6730. So your base equation is
5r + 5*(r+15) = 6730.
Simplify and find r
5r + 5r + 75 = 6730
10r = 6730 - 75 = 6655
r = 665.5.
ANSWER. The rate of the slower jet is 665.5 mph.
The rate of the faster jet is 665.5 + 15 = 680.5 mph.
CHECK. 5*665.5 + 5*680.5 = 6730 separating distance in 5 hours. ! Correct !
Solved.
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- Travel and Distance problems
- Travel and Distance problems for two bodies moving in opposite directions
- Travel and Distance problems for two bodies moving in the same direction (catching up)
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