Question

40% of a number is equal to 12.8. What is the number?

Answer 1

Let the no be x
40/100*x=12.8
x=12.8*100/40=32
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Answer 2

Define x:

Let the number be x

40% of the number = 0.4x

Form equation and solve for x:

0.4x = 12.8

x = 12.8 ÷ 0.4 = 32

Answer: The number is 32