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21 September, 22:00

A hot air balloon rises at a rate of 38 km/h and starts at the height of 60 km. Another balloon started from the ground and is rising at the rate of 50 km/h. At this rate what height will they be at when they are at the same height?

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  1. 21 September, 22:08
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    Height = 250km

    Step-by-step explanation:

    Given,

    rate of rise of ballon 1 = 38 km/h

    rate of rise of ballon 2 = 50 km/h

    Let the time after which both the ballons will reach same height be 't'.

    hence, after 't' hours,

    ⇒ height of ballon 1 = height of ballon 2

    ⇒ 38t + 60 = 50t

    ⇒ 12t = 60

    ⇒ t = 5 hours

    so, the height at which both the ballons will be at the same height will be 250km.
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