Along the highway, there are electric poles on one side of the highway and telegraph poles on the other side. The electric poles are all separated by 30 m and the telegraph poles are all separated by 108 m. If an electric and a telegraph pole are both present at the point where the highway begins, after how much distance along the highway will they both be in front of each other again?

The ratio of the weights of Jamie to that of his friend Daniel is 7:10. Daniel now goes on a diet and loses 8 kgs, and now the ratio of their weights is 7:8. How much does Daniel weigh now?

Tijn walked 10 kms to the east, then turned left and walked 20 kms. He then turned west and walked 20 kms. He again turned left and walked 20 kms. How far is he from his house ?