[問題]GWD9-33

[Albert5]

Working simultaneously and independently at an identical constant rate, 4 machines of a certain type can produce a total of x units of P in 6 days. How many of these machines, working simultaneously and independently at this constant rate, can produce a total of 3x units of product P in 4 days?

A.24
B.18
C.16
D.12
E. 8

感恩

[micki]

按部就班的作法:

x/6 = 4台機器每天所生產的單位數

(x/6) / 4 = x/24 = 每台機器每天所生產的單位數.

(x/24)*4 = 每台機器4天所生產的總單位數

3x / ((x/24)*4) = 18 台機器

答案: B

希望以上你可以接受.

雖然說在板上找這題公告的答案也不是很困難.
下次PO 題目的時候,請幫忙連答案一起附上好嗎? 謝謝.