1.

The difference between 45% of a number and 18% of the same number is 145.8. What is 30% of that number ?

Answer»

162



Let the number be x.
45% of x - 18% of x = 145.8
∴ x/100 (45 - 18) = 145.8
∴ x = 145.8 x 100/27 = 540
30% of 540 = 540 x 30/100 = 162



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