A smartphone originally costs \$800. It is on sale for \$680. Calculate the percent discount.

A reservoir’s water level decreased by 20% over the summer due to evaporation. If the water level is currently at 120 million liters, how much water was there initially?

Ivy wants to buy a dress that originally costs \$120. The store is having a sale and offers \$35 off the original price. What is the sale price of the dress?

There is a winter coat I’ve been eyeing that costs \$250. If it is bought in cash, I would receive a 20% discount. How much would I pay for that winter coat if I buy it in cash now?

A pair of running shoes costs \$80. The store is offering a 25% discount. Calculate the amount of discount and the sale price of the shoes.

The bookstore buys a set of novels for \$120 and sells it for \$150. What percent did they mark up?

In a city, the water company increased the monthly water bill by 8%. The initial monthly cost is \$54. What is the cost after the increase?

The student council borrowed \$1,275 from a local sponsor to organize a school event. The sponsor charges 6.5% simple interest per year. How much interest will the student council owe after a year?

A community center paid \$432 in simple interest after 3 years on borrowed funds for new equipment. The interest rate was 4.5% per year. What was the original amount borrowed?