Eric has 240 coins in his collection. 11/20 of the coins are pennies.4/20 of the coins are nickels. the rest are quarters. how many are quarters?

Problem fathi wants to print out a pdf document that is 48 pages long. to save paper, he decides to print on both sides of each sheet and to print two pages on each side of the sheet. how many sheets of paper will he need?

Marla bought a book for $12.95, a binder for $3.49, and a backpack for $44.99. the sales tax rate is 6%. find the amount of tax and the total she paid for these items

The surface area of the triangular prism is .