Answer this question:A farmer has 51 cows. The farmer adds five new cows to its herd and then sells a quarter of the herd. How many cows does the farmer have left?
The farmer has 51 + 5 = 56 cows in its herd. The farmer sells 56 / 4 = 14 cows of the herd. The farmer now has 56 - 14 = 42 cows.
The answer is 42.

Answer this question:Farmer Steven needs to load his truck up with compost. His tractor can scoop up compost at a rate of 75 pounds per minute. Steven's son, Darrel, wants to help. Using a shovel, Darrel can scoop up 10 pounds per minute. How much time, in minutes, would it take for the two working together at the same time to load up 2550 pounds of compost into the truck?
Working together at the same time, the rate at which the two would be able to load compost would be 75 + 10 = 85 pounds / minute. At 85 pounds / minute, the 2550 pounds could be loaded in 2550 / 85 = 30 minutes.
The answer is 30.

Answer this question:Sandro has six times as many daughters as sons. If he currently has three sons, how many children does he have?
If Sandro has three sons, the total number of daughters, six times the number of sons, is 3 sons * 6 daughters / son = 18 daughters. The total number of children is 18 daughters + 3 sons = 21 children.
The answer is 21.

Answer this question:While buying DVDs at the store, Maria received a 25% discount. If the discount she received is $40, how much did she pay in total?
Since 100 percent represent the original price, and she received a 25% discount which is $40, the original price is 100 / 25 * 40 = 160. Maria paid $160 - $40 = $120 after receiving the twenty - five percent discount.
The answer is 120.