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Shanti Sweets Stall was placing an or...

Shanti Sweets Stall was placing an order for making cardboard boxes for packing their sweets. Two sizes of boxes were required. The bigger of dimensions `25"\ "c m"\ "xx"\ "20"\ "c m"\ "xx"\ "5c m` and the smaller of dimensions `15"\ "c m"\ "xx"\ "

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Surface area of one bigger box =`2(25xx20xx20xx5+5xx25)`
1450 `cm^(2)`
By adding 5% overlaps =1450+72.5=1522.5 `cm^(2)`
Area for 250 bigger boxes =1522.5`xx`250 `cm^(2)`
cost for 250 bigger boxes =`1522.5xx250xx(4)/(1000)`=Rs 1522.5
Surface area of one smaller box =`2(15xx12+12xx5+xx15)=630 cm^(2)`
By adding 5% for overlaps =630+31.5=661.5 `cm^(2)`
Area for 250 small boxes =`661.5xx250xx(4)/(1000)=Rs 661.5`
Total cost =1522.5+661.5=Rs 2184
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