摸考碰上两题。求助！

tantan

摸考的题：
A company produces baseball cards in equal numbers of regular packs of 16 and deluxe addition packs of 30, if on a certain day, the company produces 241 cards, what is the smallest number of additional cards the company needs to produce in order to maintain its regular production practice?
A.5 B 11 C 21  D 35  D 46   ANSWER:35

这题我反复算也算不出35， 请给讲讲，是不是我哪儿理解错了。不就是用241-16的倍数吗？

Buses leave TOWN B at 3PM and every 10 hours after that, buses leave town C at 4PM and every 15 hours after that. If the buses follow this schedules begining on Monday, what is the earliest day on which that buses leave at the same time?

A.Tuesday.B Wednesday C Thursday D Sunday E they will never meet at the same time   ANSWER E

请教我一种方法算这类题。总不能硬数吧。


另外是不是有一种关于三角形的定理：两边之和大于第三边，两边之差小于第三边请帮我确认。

卧室春竹

是不是普林斯顿的题目啊！ 看的眼熟

第一个题

就是 46*5=230 46*6=276

276-241=35

你是不是题目没看清楚 。。

第二个题目 我是数的 呵呵 a b c d都不可能

还有就是 做完题目后 点右键 会有答案出来的... 呵呵 我也是不久才知道... ft

tantan

没错是扑林四吨的题，讲的明白，谢了。

Mush

外是不是有一种关于三角形的定理：两边之和大于第三边，两边之差小于第三边请帮我确认
-----没错，我确认。