22.10 is = 15% of the price
x = 100% of the price (original price)
15 = 22.10
100 x
now just use cross multiplication.
15x = 22.10 · 100
solve for x.
15x = 2210
15 15
x = 147.33333333 since the 3's go on forever you can simply put it into a fraction
x = 147 3
9
whenever there is a repeating number you can put it into a fraction but putting the repeating number over a 9