Q7. A watch which gains uniformly is 3 minutes slow at noon on a Sunday and is 4 min. 48 secs. fast at 2p.m. on the following Sunday. When was it correct?

Q8. Two clocks begin to strike 12 together. One strikes in 33 seconds and the other in 22 secs. What is the interval between the 6th stroke of the first and the 8th stroke of the second?