You buy hammers for $30.00 a dozen and sell them for 3.50 each. what is the percent markup for the hammers?

For a field trip to the zoo, 4 students rode in cars and the rest filled nine busess. how many students were in each bus if 472 students were on the trip

The length of a rectangle plus its width is 25 cm. the area is 156 square cm. what are the length and width of the rectangle? separate the answers with a comma.

What dimensions can créate more than one triangle ?