Answer this question:Mike decides to develop a plot of land. He bought 200 acres for $70 per acre. After development, he sold half of the acreage for $200 per acre. How much profit did he make?
He bought the land for 200 * 70 = $14000. He sold 200 / 2 = 100 acres. He got 100 * 200 = $20,000 from selling this. So he made a profit of 20,000 - 14,000 = $6,000.
The answer is 6000.

Answer this question:Roland needs a length of thread to complete an exercise. He has a 12cm long thread but his teacher says he needs an additional three-quarters of what he has. What is the total length required?
An additional three - quarters of 12cm is needed which is 12cm * (3 / 4) = 9cm. The total length required is 12cm + 9cm = 21cm.
The answer is 21.

Answer this question:Ronnie is a train engineer. His train pulls 3 red boxcars, 4 blue boxcars, and 7 black boxcars. If the black boxcars can each hold 4000 pounds of coal, which is half as much as what the blue boxcars can hold, and the red boxcars can hold 3 times as much as the blue boxcars, how many pounds of coal can all of the train's boxcars combined hold?
If we let X represent the number of pounds of coal that the blue boxcar can hold, then 4000 = (1 / 2)X. Solving for X, we get X = 8000 pounds of coal, which represents what the blue car can hold. Thus, the red boxcar can hold 3 * 8000 = 24,000 pounds of coal. 3 red boxcars can carry 3 * 24,000 = 72,000 pounds of coal. 7 black boxcars can carry 7 * 4,000 = 28,000 pounds of coal. 4 blue boxcars carry 4 * 8,000 = 32,000 pounds of coal. Together, all the trains boxcars can carry 72,000 + 28,000 + 32,000 = 132,000 pounds of coal.
The answer is 132000.

Answer this question:Nancy buys 2 coffees a day. She grabs a double espresso for $3.00 every morning. In the afternoon, she grabs an iced coffee for $2.50. After 20 days, how much money has she spent on coffee?
She gets a double espresso for $3.00 every morning and an iced coffee for $2.50 in the afternoon so she spends 3 + 2.5 = $5.50 every day on coffee. After 20 days, she spends 20 * 5.5 = $110.00 on coffee.
The answer is 110.