Question

The speed of a plane was raised by 60% by the pilot and

Q: Answer-The speed of a plane was raised by 60% by the pilot and then the raised speed was reduced by 50%. Th...

Let, the initial speed x kmhr Speed after increasing x x 60100 x 3x5 8x5 kmhr Speed after decreasing 8x5 8x5 50100 8x5 - 4x5 8x - 4x5 4x5 kmhr According to the data mentioned in the question, 4x5 2400 x 2400 54 x 3000 The initial speed was 3000 kmhr.

then the raised speed was reduced by 50%. The speed measured by the sonic radar at this point of time was 2400 km/h. Find the initial speed of the plane.

A 2400 km/h

B 3200 km/h

C 2800 km/h

D 3000 km/h

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