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30-04-2018
Mathematics

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If two-thirds of a number decreased by 20 is 40, what is the number?

Respuesta :

30-04-2018

Answer:
The number is: 90

Explanation:
Assume that the number is a.
We have two thirds of "a" decreased by 20 is 40
This means that:
(2/3)(a) - 20 = 40
(2/3)a = 20 + 40
(2/3)a = 60
2a = 60*3
2a = 180
a = 180/2
a = 90

Hope this helps :)

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