Time and Work Multiple Variables Two and Three
Time and Work Multiple Variables Two and Three
#### Sarah can paint a room in 12 hours and John can paint the same room in 15 hours. Working together, how long will it take them to paint the room?
1. [ ] 4 hours
2. [ ] 5 hours
3. [x] 6.6 hours
4. [ ] 6 hours
#### A pipe can fill a tank in 20 minutes and another pipe can fill the same tank in 30 minutes. If both pipes are opened simultaneously, how long will it take to fill the tank?
1. [x] 12 minutes
2. [ ] 13 minutes 20 seconds
3. [ ] 15 minutes
4. [ ] 16 minutes 40 seconds
#### A and B can do a piece of work in 8 days and 16 days respectively. They begin the work together but after 3 days, B leaves. In how many days will A finish the remaining work?
1. [x] 7 days
2. [ ] 8 days
3. [ ] 6 days
4. [ ] 5 days
#### A and B can finish a job in 20 days. A alone can finish the job in 30 days. How many days will B alone take to finish the job?
1. [ ] 40 days
2. [ ] 45 days
3. [x] 60 days
4. [ ] 75 days
#### A group of 3 friends can paint a room in 6 hours. If all 3 friends work together, how much time do they take to paint 2 rooms?
1. [x] 12 hours
2. [ ] 18 hours
3. [ ] 36 hours
4. [ ] 60 hours
