1.

The difference between 8% of a number and 3% of the same number is 39. What is 2.8% of that number ?

Answer»

21.84



Let the NUMBER be x.
∴ x(8 - 3)% = 39
x = 3900/5 = 780
∴ 2.8% of 780
= 780 x 2.8/100
 = 21.84



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