A guitar cost $26.75 after tax. if the selling price is $25.00 what was the sales tax

Suzanne began a trip with 18 1/2 gallons of gas in the gas tank of her car if she hughes 17 3/4 gallons on the trip how many gallons does she have left once she finish the trip

Jake bakes and sell apple pies. he sells each pie for $5.75 . the materials to make the pies cost $40. the boxes jake puts the pies in cost & 12.50 total. how many pies does jake need to sell to earn a profit of $50

240 seventh graders and two-thirds of the students participate in after-school activities how many students participate in after-school activities