ian-russell_60bb99d88ecd2
ian-russell_60bb99d88ecd2
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Let x = speed of airplane A let y = time of airplane A xy = 1400 (x + 50)(y - 3) = 1000 xy - 3x + 50y - 150= 1000 xy - 3x + 50y = 1150 x = 1400/y 1400 - (4200/y) + 50y = 1150 (-4200 + 50y^2) / y = -250 -4200 + 50y^2 = -250y 50y^2 +…