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1.周末,爸爸妈妈带明明去公园玩儿。一进公园,明明发现公因里新添了一个好玩儿的地方——发现王国。不过,发现王国是要买票才能进去的。小明和爸爸妈妈三人买门票一共花了20元,儿童票是成人票的一半。数学题一:请问明明的票花了多少钱?2.明明和爸爸妈妈在发现王国玩儿得可高兴了,出来后一路又说又唱,不知不觉走到了公园的独木桥这里。数学题二:这座独木桥,每次仅允许一个人通过。请问明明和爸爸、妈妈3个人依次通过独木桥,都有哪些过桥方案?
1. weekend, Mom and Dad with the park to play clearly. Once in the park, it was plainly discovered that there was a new place for fun in the public cause - to find the kingdom. However, if you find the kingdom you want to buy a ticket to get in, Xiao Ming and Mom and Dad three tickets to buy a total spent 20 yuan, children’s tickets are half the adult ticket. Math question 1: Excuse me, how much does the ticket cost? 2. Obviously, Mom and Dad were happy when they discovered that the kingdom was playing. After coming out, they said they sing again and unknowingly came to the park’s unique wooden bridge here. Math question 2: This single-plank bridge allows only one person to pass at a time. I would like to ask and dad, mom and three individuals in turn through the single-plank bridge, what are the bridge plan?