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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.

 

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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.

其他解答:

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

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