5. A firm manufactures bumper bolts and fender bolts for cars. One machine can produce 120 bumper bolts and another machine can produce 130 fender bolts per day. The combined number of bumper and fender bolts the packing department can handle is 230 per day. How many of each type of bolts should the firm produce daily to maximize its sales if each bumper bolts sell for $2 and each fender bolts sell for $1
