Answer this question:There are many fish in the tank. One third of them are blue, and half of the blue fish have spots. If there are 10 blue, spotted fish, how many fish are there in the tank?
There are 2 * 10 = 20 blue fish. There are 3 * 20 = 60 fish.
The answer is 60.

Answer this question:Laura needs to buy window treatments for 3 windows in her house. She will need to buy a set of sheers and a set of drapes for each window. The sheers cost $40.00 a pair and the drapes cost $60.00 a pair. How much will the window treatments cost?
She needs a set of sheers that cost $40.00 and a set of drapes that cost $60.00 per window so that will cost her 40 + 60 = $100.00. She had 3 windows she needs window treatments for they cost her $100.00 each so 3 * 100 = $300.00.
The answer is 300.

Answer this question:Linda is painting her bedroom. Her bedroom has 4 walls, with the room being 20 feet wide by 20 feet long by 8 feet tall. One wall has a 3-foot by 7-foot doorway. A second wall has a 6-foot by 4-foot window. A third wall has a 5-foot by 7-foot doorway to a walk-in-closet. And the fourth wall is completely solid. What is the total area of wall space that Linda will have to paint?
The solid wall is 8 ft. * 20 ft. = 160 sq. ft. The doorway is 3 ft. * 7 ft. = 21 sq. ft. The window is 6 ft. * 4 ft. = 24 sq. ft. The closet door is 5 ft. * 7 ft. = 35 sq. ft. The total area of the doors and windows is 21 sq. ft + 24 sq. ft. + 35 sq. ft. = 80 sq. ft. The solid wall is 160 sq. ft., so before the areas of the doors and window are taken into account, the total wall area is 4 * 160 sq. ft. = 640 sq. ft. Taking into account the doors and window, the total wall area Linda will have to paint is 640 sq. ft. - 80 sq. ft. = 560 sq. ft.
The answer is 560.

Answer this question:There are five times as many swordfish as pufferfish in an aquarium exhibit. If there are 90 fish total, how many pufferfish are there?
Let s be the number of swordfish and p be the number of pufferfish. We know that s = 5p and s + p = 90. Substituting the first equation into the second equation, we get 5p + p = 90. Combining like terms, we get 6p = 90. Dividing both sides by 6, we get p = 15.
The answer is 15.