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Sarah competes in a long jump competition
Her first jump is 4.25m
Her best jump is 12% more than this
However, her best jump is 15% lower than the winning jump
Work out the length Of The winning jump

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barnuts

So her best jump is 12% of her 1st jump. So this is:

best jump = 1.12 * 4.25 m

best jump = 4.76 m

 

Since the winning jump is 15% lower, so this is only 85% of the best jump hence:

winning jump = 0.85 * 4.76 m

winning jump = 4.046 m = 4.05 m

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