Trey's coffee shop makes a blend that is a mixture of two types of coffee. type a coffee costs trey $4.80 per pound, and type b coffee costs $5.85 per pound. this month's blend used three times as many pounds of type b coffee as type a, for a total cost of $603.45 . how many pounds of type a coffee were used?

Expresa commuter train leaves downtown sation and travels at a average speed of 55 miles per hour towards the north side sation, which is 50miles away. thirty minutes later, express commuter train #7 leaves north side and travels at a average speed of 35miles per hour towards downtown sation. at the moment the two trains pass each other, how far(in miles) is train #12 from the downtown sation and how long(in minutes) has the #12 train been traveling

An ant travels at a constant rate of 30cm every 2 minutes.at what speed does the ant travel per minute

Edger needs 6 cookies and 2 brownies for every 4 plates how many cookies and brownies does he need for 10 plates