$16.50 is 3/4 of the original price, as it is 25% (1/4) off. To obtain 1/4 of it, we can divide $16.50 by three, which is $5.50. This is 1/4 of the original price. Now to get the full original price, we can multiply that by four, which is $22.00. Hope that this helped, good luck!