I am less than seven i am more than 3 i am a mixed number- a whole number plus a fractions ITS A FRACTION RIDDLES THE OPTIONS ARE EITHER:
3 and a half
5and a half
8 and a half
6
7 and a half
or 1 and a half

PLEASW HELP

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?

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?

At the county fair, the baxter family bought 6 hot dogs and 4 juice drinks for $12.90. the farley family bought 3 hot dogs and 4 juice drinks for $8.55. find the price of a hot dog and the price of a juice drink.