hzb53jl55v的部落格

標題:

maths problem

發問:

The prices of a mouse-pad and a file-jacket are $35 and $48 respectively. Mr Chan wants to use 400 or less to buy 10 of them in total and as many file-jacket as possible.How any mouse-pads should he buy? Use inequality plaese.

最佳解答:

Let x be the number of mouse-pads he should buy. 35x + 48(10-x) = 80/13 = 6.154 Hence minimum number of mouse-pads that he should buy is 7.

• 屯門去荔枝角永康街51-53號時穎中心點去-(20分)
• 洗完頭乾左會起毛燥-33--!
• 我既血壓上壓得90下壓得50中醫話太低喇,同埋我想知乜野叫做心血少--(中醫)

• 屯門去荔枝角永康街51-53號時穎中心點去-(20分)
• 洗完頭乾左會起毛燥-33--!
• 我既血壓上壓得90下壓得50中醫話太低喇,同埋我想知乜野叫做心血少--(中醫)

此文章來自奇摩知識+如有不便請留言告知

其他解答:

Let the number of mouse-pad and file-jacket be x and y 1)35x+45y