同大家确认一题数学鸡块的答案

zhuliangyu

5. A bank has a number of coins which equals $2.9 in total. There are only 2 types of coins, $0.25 each and $0.05 each. What is the remainder if the number of $0.05 coins can be divided by 5? (forgot the answers)

这题答案是不是算出余数=3

huanwen

这题什么意思我都没看懂，请教楼主

tt923

就是3，0.05的5倍是0.25，用2.9除以0.25等于11余0.15，这样无论有多少枚0.25元的硬币，0.05元的硬币总数除以5都余3

dennyhuang

对,余数是3