50% of what number is 30
3 answers
30 * 0.5 = ?
Think of it this way:
30 is half of what number?
You should be able to do that "in your head"
30 is half of what number?
You should be able to do that "in your head"
let the number be x then,
50% of x = 30
(50/100)* x = 30
0.5 x = 30
x = 30/0.5
x = 60
50% of 60 is 30
50% of x = 30
(50/100)* x = 30
0.5 x = 30
x = 30/0.5
x = 60
50% of 60 is 30