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07-02-2017
Mathematics

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When a number is decreased by 30% of itself, the result is 28. What is the number?

Respuesta :

wolf1728 wolf1728

07-02-2017

x -.30x = 28
.70x = 28
x = 40

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lyssa86 lyssa86

07-02-2017

Number decreased by 30% of itself is 28
x - .30x = 28
.70x = 28
x = 28/.70 = 40

40 minus 30% of itself is 40 - 12 which does = 28.

Answer Link

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