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4 November, 10:08

A red ballon starts at 7 meters off the ground and rises at 3 meters per second. A ballon starts at 12 meters off the ground and rises at 2 meters per second. Write and solve an equation to determine when the balloons are at the same height

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  1. 4 November, 11:22
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    Let x be the no. of seconds it takes for the balloons to be at the same height.

    7+3x = 12+2x

    Deduct both sides by 2x.

    7+x = 12

    Deduct both sides by 7.

    x = 5

    Ans: It will take 5 seconds for the balloons to be at the same height.
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