Last week’s answer: 9:12 am. This can be done in two ways – writing down the times at which each train will return to the station and finding the first time on both, or calculating the LCM of 4 and 6 (12) and then adding that to 9am.
This week’s problem: Don is building a tower out of small bricks. It will be 15 blocks high. So far 6 bricks have been placed, which reach a height of 10cm. How tall will the complete tower be?
The answer will be in next week’s weekly problem.