Explanation

There are 7 days in a week. Knowing that the chef can make 25 pastries in a day, the weekly number can be calculated: \(25 \times 7 = 175\)

Find the length of x in the figure.

A student buys an algebra textbook for 11.11USD, a philosophy textbook for 15.83USD, and a dictionary for \(\$10.31\). What is the total cost of the books?

A blouse normally costs \(\$18.50\). How much money is saved if the blouse is purchased at a 20% discount?

A menswear store is having a sale: "Buy one shirt at full price and get another shirt for 50% off." If Frank buys two shirts, each with a regular price of \(\$49\), how much money will he save?

Three people go to a restaurant. Their bill comes to \(\$78.00\). They decide to split the cost. One person pays \(\$4.50\); the next person pays 3 times that amount. How much will the third person have to pay?