Q1) Area of three fields is , and respectively. In each of the fields a flower bed of equal length has to be made. If flower bed in each of the fields is 3 m wide then what is the maximum length of the flower bed in each of the fields?
- 7 m
- 9 m
- 5 m
- None of these
Q2) A merchant has three different kinds of milk - 435 litres, 493 litres and 551 litres. Find the least number of caks of equal size required to store all the milk without mixing.
Q3) How often will five bell toll together in one hour if they start together and toll at intervals of 5, 6, 8, 12, 20 seconds respectively?
Q4) The traffic lights at three different road crossings change after every 48 s, 72 s and 108 s respectively. If they all change simultaneously at 8:20:00 h, then they will again change simultaneously at:
- 8:27:12 h
- 8:27:24 h
- 8:27:36 h
- 8:27:48 h
Share workings for each question. Don't just share the answers.