Johann has 3 sheets of wallpaper. each sheet of wallpaper has an area of 12 square feet. johann cuts the wallpaper into square foot pieces. how many pieces are there altogether?

Jack did 3/5 of all problems on his weekend homework before sunday. on sunday he solved 1/3 of what was left and the last 4 problems. how many problems were assigned for the weekend?

In the triangles, bc =de and ac fe.if the mzc is greater than the mze, then ab isdfelth

Mat bought a phone for $100. he has to pay $30 per mouth. if he has paid $640 in total, how many mouth has he had the phone?