[計量] 最後幾題計量請教
A group of 4 pumps are filling a tank. Each of the 3 smaller pumps works at 2/3rds
the rate of the largest pump
If all 4 pumps work at the same time, they should fill the tank in what fraction of the time....
that it would have taken the largest pump if it operated alone?
Given p.n! = 0 & p^2 = 5n
Col A: n
Col B: 3
Hanna teaches biology for a group 53 students.
She can divide them into two batches P and Q. P has 7 batches of n students each.
Q has x students of five batches; or six students with y students in 5 batches and (y+1) students in 6th batch.
Col A: x
Col B: n
麻煩幫忙解題了!!
--
※ 發信站: 批踢踢實業坊(ptt.cc)
◆ From: 61.228.138.237
討論串 (同標題文章)
完整討論串 (本文為第 1 之 2 篇)：
GRE 近期熱門文章
PTT職涯區 即時熱門文章