Q: Kirill is 14 less centimeters in height than his brother. Together their heights equal 112 centimeters. How tall is Kirill in centimeters?
A: Let B = brother's height in cm. Kirill = B - 14. 2B - 14 = 112 cm. 2B = 126. B = 63 cm. Kirill = 63 - 14 = 49 cm. Kirill is 49 centimeters tall. The answer is 49.
Question: Alex had 36 ounces of jelly beans. He ate 6 ounces. Then he divided the rest equally into 3 piles. How much does each pile weigh?
Answer: Start by taking out the ones he ate: 36 ounces - 6 ounces = 30 ounces. Divide the remainder equally: 30 ounces / 3 piles = 10 ounces per pile. The answer is 10.
[Question]Each week, Paul has 2 hours of homework on weeknights and 5 hours for the entire weekend. This week Paul has practice 2 nights out of the week and can't do any homework those nights. How many hours of homework does he have to average for the other nights to get his week's homework done?
[Answer]Paul has 10 hours of homework from weekdays because 2 x 5 = 10. He has 15 total hours because 5 + 10 = 15. He has 5 days to do his homework because 7 - 2 = 5. He needs to do 3 hours a night because 15 / 5 = 3. The answer is 3.
Q: Austin and Jake start descending from the 9th floor of a building at the same time. Austin uses the elevator and Jake uses the stairs, descending 3 steps every second. The stairs have 30 steps across each floor. If the elevator will take a minute to get to ground level, how many seconds later will Jake get to the ground floor?
A: Jake has to descend 30 steps on 9 floors for a total of 9 * 30 = 270 steps. He descends 3 steps every second so he will descend 270 steps in 270 / 3 = 90 seconds. Austin will get down after only a minute (60 seconds) so Jake will get down 90 - 60 = 30 seconds later. The answer is 30.
Question: A party store ordered 5 boxes of balloons. Each box contains 8 bags of balloons, and there are 12 balloons in each bag. How many balloons are there?
Answer: The five boxes have a total of 5 x 8 = 40 bags of balloons. So, there are 40 x 12 = 480 balloons. The answer is 480.
Q: Orlan gave one-fourth of his 20-meter rope to Allan. He then gave two-thirds of the remaining to Jack. How many meters of rope is left to Orlan?
A:
Orlan gave Allan 20 x 1 / 4 = 5 meters of rope. So he had 20 - 5 = 15 meters left. Then he gave 15 x 2 / 3 = 10 meters of the rope to Jack. Therefore, Orlan is left with 15 - 10 = 5 meters of rope. The answer is 5.