1. 65% of what number is 5.2?
2. 44% of what number is 55?
3. 50% of what number is 7.5?
4. (fraction percent) 33 & 1 over 3 % of what number is 21?

1) 65% of x=5.2
     65/100 of x=5.2
0.65x=5.2
x=5.2/0.65
x=8

2) 44% of x=55
    44/100 of x=55
0.44x=55
x=55/0.44
x=125

3) 50% 0f x=7.5
     50/100 of x =7.5
0.5x=7.5
x=7.5/0.5
x=15

4) 100% of x =21
    100/100 of x=21
    1x=21
 x=21/1
x=21

 

Um what? rephrase that ?