[Question]I bought a pair of shoes for $51. The shoes were already marked 75% off. What is the original price of the shoes?
[Answer]Let X be the original price of the shoes. The discounted price is X - X * 75% = 0.25 * X = $51. The original price of the shirt was X = $51 * 4 = $204. The answer is 204.

[Question]John has 10 members of his family on his father's side. His mother's side is 30% larger. How many people are there in total?
[Answer]His mother's side is 10 * .3 = 3 people larger than his father's side. So his mother's side has 10 + 3 = 13 people. So the total number of people is 13 + 10 = 23. The answer is 23.

[Question]Tyler has 21 CDs. He gives away a third of his CDs to his friend. Then he goes to the music store and buys 8 brand new CDs. How many CDs does Tyler have now?
[Answer]Tyler gives away 21 / 3 = 7 CDs. After giving away a third of his CDs, Tyler has 21 - 7 = 14 CDs. After buying new CDs, Tyler has 14 + 8 = 22 CDs. The answer is 22.

[Question]For the summer, the clothing store has a 50% discount for all items. On Wednesdays, there is an additional $10.00 off on all jeans after the summer discount is applied. Before the sales tax applies, the cost of a pair of jeans is $14.50. How much was the original cost for the jeans before all the discounts?
[Answer]
Before the Wednesday discount, the cost of the jean is $14.50 + $10.00 = $24.50. Since the original price was reduced by 50%, the original cost for the jeans is $24.50 * 2 = $49.00. The answer is 49.