Percentage Practice Test 8 with solutions

Question : 37 of 38

Marks: +1, -0

When Selina added 80% of a number to 80, she found out that the result is the same. What is the number?

Solution:

Let the number be x.
Then, 80% of x + 80 = x

80/100x+80=x

4x+400=5x

x=400

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