A construction worker bought 21 1/4 pounds of nails. When those nails were all used , he bought 1 1/2 times as many nails he had bought the first time. How many pounds of nails did he buy the second time

Franco wants to double the volume of the cone. what should he do?

Which approach to the theory-and-research cycle does the following sequence reflect: (1) specific observations suggest generalizations, (2) generalizations produce a tentative theory, (3) the theory is tested through the formation of hypotheses, and (4) hypotheses may provide suggestions for additional observations?

If 10 men take 18 days to mow 60 acres of grass, how long will 15 men take to mow 80 acres?