exam Maths Puzzle Numerical Ability

With a head wind, a plane traveled 1000 mi in 4 hours. With the same wind as a tail wind, the return trip took 3 hours and 20 minutes. Find the plane's air speed and wind speed.

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PLEAS HELP TO ADD GROUPING SYMBOLS TO THIS EXPRESSION TO COME OUT TO 279,936-THANKS 2*3^3+4 write the equation of the line passing through each of thhe given pairs of points. write your results in slop-intercept form, where possible.
1. (-1,3) and (4,-2)