POW #5:A Cycling Problem
Orville and Wilbur owned a bicycle shop which also sold tricycles.One day,they decided to take an inventory of their stock.They each volunteered to count one item,which would have worked out just fine if one had counted bicycles and the other had counted tricycles.But,Orville and Wilbur were very independent thinkers.Orville counted the number of pedals in the shop and Wilbur counted the number of wheels.
Orville found that they had 144 pedals in the shop,and Wilbur found that they had 186 wheels.All pedals and wheels were actually parts of either bicycles or tricycles.They were just about to start over with their inventory when their friend,Kitty Hawkins,who was a good problem-solver,challenged them to figure out the number of bicycles and tricycles from the inventory they had already done.
Can you help the Wright brothers?
人气:151 ℃ 时间:2020-03-19 16:41:47
解答
这是一道典型的“鸡兔同笼”问题.分析:每辆自行车有2个轮子,每辆三轮车有3个轮子.一、用算术先确定有多少辆车因为不管自行车还是三轮车每辆车的踏板都是2个,所以三轮车和自行车一共有:144÷2=72(辆)假设法:假设全...
推荐
猜你喜欢
- 请问谁有儿童故事司马光砸缸故事全文,白话文的,急用呀
- Are you ( ) supper? A having B have C to have
- 一个蓄水池有AB两个排水管和C进水管,单独开放A要3小时才能排完,单独开放B要4小时才能排完
- 一类自然数,它们的各个数位上的数字和为200,那么,这类自然数中最小的一个是多少?
- 15个零件有一个次品与正品不一样重(或轻或重),用天平称至少几次可以找出次品?
- food和foodstuff有什么不同?
- 已知一个直角三角形的两条直角边分别是5.25m、1.5m ,求斜边的长度
- 设A为4阶方阵,且秩R(A)=3,A*为A的伴随矩阵,则R(A*)=