Percentage Practice Test 5 with solutions

Question : 16 of 40

Marks: +1, -0

The product of 30% of a number and 20% of the same number is 1,536. What is the number?

Solution:

Let the number be x.
Then, (30% of x) (20% of x) = 1,536

30/100×x(20/100×x)=1536

600x^2 = 1,536 × 100 × 100

x^2 = 25,600

x = 160

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