Pupils
Four pupils are going via the dark hall. Start at one side and have to get to the other side for 17 minutes. They have only one lamp for the trip. The corridor is narrow. They can go up two pupils at a time and at a slower speed. Each pupil went different speed. Carol passes the hall in one minute, Peter in two minutes, Ibrahim in 5 minutes, and Hugo in 10 minutes. In what order do they go?
Final Answer:
Showing 1 comment:
Dr. Math
Order of transitions:
Karol and Jarka go to the other side (2 min).
Karol comes back (1 min).
Ivana and Hugo go to the other side (10 min).
Jarka comes back (2 min).
Karol and Jarka go to the other side (2 min).
Total time: 2 + 1 + 10 + 2 + 2 = 17 minutes.
Karol and Jarka go to the other side (2 min).
Karol comes back (1 min).
Ivana and Hugo go to the other side (10 min).
Jarka comes back (2 min).
Karol and Jarka go to the other side (2 min).
Total time: 2 + 1 + 10 + 2 + 2 = 17 minutes.
Tips for related online calculators
See also our variations calculator.
Do you want to convert velocity (speed) units?
Do you want to convert time units like minutes to seconds?
Would you like to compute the count of combinations?
Do you want to convert velocity (speed) units?
Do you want to convert time units like minutes to seconds?
Would you like to compute the count of combinations?
You need to know the following knowledge to solve this word math problem:
combinatoricsbasic operations and conceptsUnits of physical quantitiesGrade of the word problem
Related math problems and questions:
- Hurry - rush
I will travel from the school to the bus stop at an average speed of 7 km/h for 24 minutes. How fast do I need to go if I need to get there in 17 minutes? - Peter sleep time
Peter slept 635 minutes. He woke up at 7:15 in the morning. What time did he go to bed? - School trip ratio
One hundred seventy-five school pupils signed up for the school trip. The ratio of boys to girls was 9: 16. In the end, 19 registered students did not come on the trip, so the ratio of the number of participating boys and girls was 9: 17. How many boys an - Play tennis
Peter and George agreed to go play tennis. Peter's path to the tennis court is 800 meters longer and leads around George's house. Peter comes out first and then picks up George. Together they go at the same average speed as Peter went, so they reach the p - School pupil distribution
Forty-eight pupils go to school; there are ten boys more than girls. How many girls go to school? - Pupil transportation count
One-third of the pupils go to school by bus. The other half take a tram, and the remaining ten pupils walk. How many students are in the class? - Chasing a Bike Thief
The thief stole Peter's bike and rode it down the road at 25 km/h. Peter's older brother saw it in half a minute and caught up with the thief in 5 minutes on a second bike. How fast must Peter's brother have been driving?
