posted by Phyl on .
A group of tourists went to Sentosa. The total fare is $240. If 10 more tourists join the tour each will pay $4 less. Find the original number of tourists in the group
If there are n tourists, the cost each is 240/n
240/n - 4 = 240/(n+10)
240/20 = 12
240/30 = 8 = 12-4