Vladimir wants to take his two daughters to their Dacha (weekend house) which is located 66 kilometers away from their home. Vladimir's motorbike has a maximum speed of 50 kilometers per hour; with one passenger (that is, driver plus one extra person), the maximum speed drops down to 40 kilometers per hour; the motorbike cannot carry three persons. Vladimir's walking speed is 9 kilometers per hour, and each daughter walks at a speed of 10 kilometers per hour.

Is there a schedule that makes all three of them (and the motorbike) reach the Dacha within three hours?

• Does each person weigh the same amount? Can the daughters drive the motorbike?
– A E
Mar 21 '15 at 14:46
• Can the daughters carry Vladimir and if so does it slow their walking pace?
– A E
Mar 21 '15 at 14:52
• If the daughters carry Vladimir, their walking speed drops down to 1 kilometer per hour. If Vladimir carries one of the daughters, his walking speed drops down to 1 kilometer per hour. Mar 21 '15 at 14:54
• And no other form of transportation is available?
– A E
Mar 21 '15 at 14:56
• No other form of transportation is available. Mar 21 '15 at 14:58