An office supply store sells pencils individually or by the case. pencils purchased individually cost $0.97 each. one case of forty pencils costs $37.20. you have an annual budget of $95.00 for pencils. without exceeding the annual budget of $95.00, you can purchase full cases of

The u-drive rent-a-truck company plans to spend $13 million on 320 new vehicles. each commercial van will cost $25 comma 000, each small truck $50 comma 000, and each large truck  $80 comma 000. past experience shows that they need twice as many vans as small trucks. how many of each type of vehicle can they buy?