The rate of the jet in still air is 730 mph and the rate of the wind is 65 mph.
Let R be rate of jet in still air.
Let W be wind speed
Thus;
Rate of jet with the wind = R + W
Rate of jet against the wind = R - W
We know that rate of speed is given by;
R = D/T
Thus;
R - W = 1330/2
R - W = 665 -----(eq 1)
Similarly;
R + W = 1590/2
R + W = 795 ----(eq 2)
Adding eq 1 to eq 2 gives;
2R = 1460
Rate of jet in still air: R = 730 mph
Rate of wind:
730 + W = 795
W = 65 mph
Complete Question is;
A jet travels 1330mi against the wind in 2 hours and 1590mi with the wind in the same amount of time. What is the rate of the jet in still air and what is
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