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प्रश्न
If the cost of 30 packets of 8 pencils each is Rs 600, what is the cost of 25 packets of 12 pencils each?
विकल्प
Rs 725
Rs 750
Rs 480
Rs 720
उत्तर
Rs 750
Cost of 30 packets of 8 pencils each = Rs 600
Cost of 1 packet of 8 pencils = `600/30` = Rs 20
Cost of 1 pencil = Rs `20/8`
Cost of 1 packet of 12 pencils = `12 × 20/8=240/8`= Rs 30
Cost of 25 packets of 12 pencils each = 25 × 30 = Rs 750
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