20 is 40% of what number

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asked Mar 17, 2016 226k views

2 Answers

Ayyp · Answer 1 · 2016-03-22T02:06:20+0000

is means equal

of means multiplication

so

20 = 40% x a

40% = 40/100 = 4/10 = 2/5

So

20 = 2/5 x a

Multiply both sides by 5/2

20 x 5/2 = a

10 x 5 = a

a =50

So your final answer is
$\boxed{\bf{50}}$

20 is 40% of what number

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