Question

a hot air balloon rises up for 20 minutes and reaches a height of 750 metres then after it starts to descend at the rate of 25 m per hour find the height of the baloon above earth after 15 minutes​

Answer 1

Step-by-step explanation:

In 20 minutes height = 750 meters

So

In 1 minute, height = 750/20 = 75/2 meters

So

In 15 minutes, height = 75/2 × 15 = 562.5 meters

Answer 2

Answer:

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Step-by-step explanation:

1min = 25m

So,

(15×25) = 375m