0
5o% of what number is 25
40% of 50% of a number
= 40% * 50% of a number
= 0.4 * 50% of a number
= 20% of a number
or 0.2 of a number
or 1/5 of a number
50% of number is 75
1% of number is 75/50
Therefore 100% of number (which would be the number) is (75/50) x 100 = 150
50 is a whole number.