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Hi, feel free to have a look at the video explanation.

Hope it helps. 🙂 

Solution to the problem (Click Here)

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let total no. of bags be 8u, Brand A is 2u, and Brand B and Brand C are 3u each. Then KIV this info.

I used ratio method below but present in table for easy typing here. Can follow starting arrows (–> ) while filling up this table.

  A B C Total
Unit selling price $240 $180 $130  
No. sold in 1 set 3 4 7  
–> $ takings per set–> $720 —> $720 –> $910 —> –>$2,350
14100/2350 = 6 sets <– <— <— <— $14,100 <–
–>Total no. sold in 6 sets 18—> 24—> 42—> –>84 (which is 50%)
        100% is 168
    3u=3 x 168/8 = 63# <— 168 is 8u <–
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