Lena bought stamps at the post office. Some of the stamps had a snowflake design, some had a truck design, and some had a rose design. Lena bought 20 snowflake stamps. She bought 7 more truck stamps than snowflake stamps, and 6 fewer rose stamps than truck stamps. How many stamps did Lena buy in all?

Postage stamps cost $0.68. Bill had to get 10 stamps and Melinda had to get more than Bill. Melinda had $8.16, how many stamps did she get?

Miko, Keddy and Sharko have 468 stamps altogether. Miko has 4 times as many stamps as Keddy. Sharko has 342 stamps more than Miko. How many stamps does Miko have?

Rita bought 5 packages of cat food and 3 packages of dog food. Each package of cat food contained 7 tins, and each package of dog food contained 3 tins. How many more tins of cat food than dog food did Rita buy?

Carrie owns an automobile dealership. Last week, she received a shipment of 55 automobiles. She now has 363 automobiles for sale. How many automobiles did Carrie have before the shipment?

Marie wishes to plant pumpkins and sunflowers, so this morning she bought packs of seeds at a local gardening shop. Pumpkin seeds were sold in packages of 11 seeds, while sunflower seeds were sold in packs of 12. If Marie bought the same number of each type of seed, what is the smallest number of pumpkin seeds she must have bought?