54 is 75% of what number?
//Work backwards from what your original equation would be.54 = 75/100 x54 100 = 75 x(54 100) / 75 = xx = 72
rule of threex ---- 100%54 --- 75%75x = 100 . 5475x = 5400x = 5400/75x = 72 answer : 72 ... Good studies!!