The Appalachian Trail is a hiking trail that runs from Maine to Georgia and is approximately 2,160 miles long. Suppose the Andersons want to hike 9 miles per day along an 864-mile section of the trail from New York to Georgia. On how many days will the Anderson's hike 9 miles?
864/9 = D
D = 96
The library had a large collection of books. Then the librarian ordered 2,200 more books. Now there are 13,327 books. how many books did the library have at the start?
b + 2,200 = 13,327
b = 13,327 -2,200
b = 11,127
Rita and Cody sold refreshments at the football game. They sold 6 sandwiches, 8 bags of popcorn, and 20 bottles of water. The sandwiches cost $5 each. The bags of popcorn cost $2 each. The bottles of water cost $1 each. How much money did Rita and Cody make?
6 x 5 + 8 x 2 + 20 x 1 = M
M = $66
A bakery had 2 trays with 28 muffins on each tray. The bakery had 4 trays of cupcakes with 12 cupcakes on each tray. On Monday the bakery sold 12 cupcakes. How many muffins and cupcakes were left in all?
92 muffins and cupcakes. 2 x 28 = 56 muffins; 4 x 12 = 48 cupcakes. 56 + 48 = 104; 104 -12 = 92.
Tell whether the following are prime or composite:
47, 28, 98, 61
prime, composite, composite, prime