A plane can fly 990 miles in the same time as it takes a car to go 210 miles.If the car travels 130 miles per hour slower than the plane, find the speed of the plane.

الحلّ

الحلّ

plan e^{'} s speed : 165

خطوات الحلّ

Translate the problem into an equation:

\frac{990}{x} = \frac{210}{x - 130}

\frac{990}{x} = \frac{210}{x - 130}, x

حلّ لـ:

x = 165

plan e^{'} s speed : 165

أمثلة شائعة

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