Question 1117368
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The other tutor indicated it took him several tries to try to understand what the problem meant.<br>
I think his interpretation is not right.  It's not surprising, considering the very awkward way in which the problem is stated.<br>
It seems x is a percentage, so when Lee bought the book for 300 and sold it to Wong at a profit of x%,the price Wong paid was {{{300(1+x/100)}}}.<br>
Then when Wong sold it to Fei at a profit of x%, the price Fei paid was {{{300(1+x/100)^2}}}.<br>
Now we have the problem of trying to interpret the meaning of "Fei paid ¥(6x+0.75) more for the book than what Lee paid".  The only interpretation I see that gives a reasonable answer is that the amount Fei paid was {{{300((6x/100)+.75)}}}.<br>
So<br>
{{{300(1+x/100)^2 = 300((6x/100)+.75)}}}
{{{(1+x/100)^2 = (6x/100+.75)}}}<br>
Graphing on a graphing calculator, or some ugly work with the quadratic formula, finds x = 6.351 to 3 decimal places.<br>