In the given question it is
required to find an unknown amount from all the details given in the question.
It is given that 21 is the 75% of the unknown number.
Let us consider the amount = x Then we can write the equation as 75x/100 = 21 75x = 21 * 100 75x = 2100 x = 2100/75 = 28 So the correct amount is 28.
. I hope to have
made the procedure clear for finding the solutions of such problems.
21 is 75% of 28. You already know that to make 100, you need 4 25's. 75 is three 25's. You take 21 and divide it by three to get seven. Then you take your past knowledge and multiply 7 by 4 and get 28.
