Joe's Tire shop sells three types of tires. High performance tires sell for $40/tire. Ultra performance tires sell for $50/tire. Extreme performance tires sell for $7O/tire. Last week, the revenue generated by the sales of ultra performance tires exceeded the revenue from the sale of extreme performance tires by $1640. If the tire shop sold a total of 238 tires last week for a total revenue of $11,960, how many of each type of tire were sold? There were high performance tires, ultra performance tires, and extreme performance tires were sold.

A television sells for $600. Instead of paying the total amount at the time of the purchase, the same television can be bought by paying $150 down and $50 a month for 14 months. How much is saved by paying the total amount at the time of the purchase?

A shoe store marks up the price of its shoes at 130% over cost. A pair of shoes goes on sale for 15% off and then on the clearance rack for an additional 35% off. A customer walks in with a 10% off coupon good on all clearance items and buys the shoes. Express the​ store's profits on these shoes as a percentage of the original cost.

A house was valued at $125,000 in the year 1992. The value appreciated to $170,000 by the year 2000.