Sonja made 20 hamburgers. each hamburger contained 1/4 pound of ground beef.
how much ground beef did sonja use to make the hamburger

a. 4 pounds

b. 5 pounds

c. 10 pounds

d. 80 pounds

Shane can shovel the driveway in 4 hours, but if his sister it would take 2 hours. how long would it take taylor to shovel the driveway alone

Tom can paint the fence in 12 hours, but if he works together with a friend they can finish the job in 8 hours. how long would it take for his friend to paint this fence alone?

Thanh and her crew are building a stage in the shape of a trapezoid for an upcoming festival. the lengths of the parallel sides of the trapezoid are 14 ft and 24 ft. the height of the trapezoid is 12 ft.what is the area of the stage? enter your answer in the box. ft²