Mark, sam, and alvin were participating in a litter campaign on monday for the
school playground. each boy collected 20 pieces of litter, but after they put their
litter together, the wind blew 14 pieces away. how many pieces of litter were left?
1. inc
problem solving experiences in mathematics
copyright 1985 addison-wesley p

Select the margin of error that corresponds to the sample mean that corresponds to each population: a population mean of 25, a standard deviation of 2.5, and margin of error of 5%

1yd 1 ft = 1 1/12 1 1/3 1 1/2 1 1/6

Three friends went on a road trip from phoenix, az, to san diego, ca. mark drove 50 percent of the distance. jason drove 1/8 of the distance. andy drove the remainder of the distance. 1. andy thinks he drove 1/4 of the distance from phoenix, az, to san diego, ca. is andy correct? 2. the distance from phoenix, az, to san diego, ca, is 360 miles. how many miles did each person drive? 3. solve the problem. what is the answer in total?