Answer this question:Mark can jump 6 inches off the ground. Lisa can jump double the height as Mark, and Jacob can jump double the height of Lisa. If James jumps 2/3 as high Jacob, how high can James jump?
Lisa can jump 6 * 2 = 12 inches. Jacob can jump 12 * 2 = 24 inches. James can jump 24 * (2 / 3) = 16 inches high.
The answer is 16.

Answer this question:Claudia offers art classes to kids and charges $10.00 for her one-hour class. If 20 kids attend Saturday’s class and half that many attend Sunday’s class, how much money does she make?
Sunday’s class is half the size of Saturday’s class with 20 kids so Sunday has 20 / 2 = 10 kids. She has 20 kids on Saturday and 10 kids on Sunday for a total of 20 + 10 = 30 kids. She charges $10.00 per kid and teaches 30 kids over the weekend so she makes 10 * 30 = $300.00.
The answer is 300.

Answer this question:Camp Cedar has 40 boys, it has 3 times as many girls. It needs 1 counselor for every 8 children. How many counselors does Camp Cedar need?
Camp has 3 * 40 boys = 120 girls. Camp Cedar has a total of 40 boys + 120 girls = 160 children. Camp needs 1 counselor per 8 children, so 160 children / 8 children = 20 counselors needed.
The answer is 20.

Answer this question:Jen has 10 more ducks than four times the number of chickens. If Jen has 150 ducks, how many total birds does she have?
Let the number of chickens be c. If there are 150 ducks, we can describe the number of chickens as 150 = 10 + 4c. So, 4c = 150. And, there are c = 35 chickens. In total, Jen has 35 chickens + 150 ducks = 185 birds.
The answer is 185.