Question

answer 41st question please fast

Answer 1

Given, the initial height of the aeroplane = 1600 m
           time taken to descend every 70 m = 1 minute
The final height of the aeroplane = 200 m 
So, the distance it descended = 1600 - 200 = 1400 m
                           70 m   ---------------   1 minute
                       1400 m   ---------------   x minutes
   Let's cross multiply
                      70 * x = 1400 * 1
                             x = 20
∴ The time the aeroplane will take to descend to a height of 200 m is 20 minutes.

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