Let us assume the unknown number to be = x Then 92% * x = 69 (92/100) * x = 69 92x = 69 * 100 92x = 6900 x = 6900/92 = 75 So the unknown number is 75. I hope there is nothing complicated about the procedure by which the problem has been solved. You can use this method in future for solving similar kind of problems without necessarily looking out for any kind of help from outside.Also be very careful about the calculation part.