an art teacher about several drawing kids that each contain 12 marks and 20 coloured pencils she bought 84 marks in all. how many coloured pencils did she buy
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Answer:
From given data
L C M of 24 and 32
32=2×2×2×2×2
24=2×2×2×3
L C M(32,24)=2×2×2×2×2×3=96
24 pencils = 1 pack
i) 96 pencils = 4 × 24 pencils = 4 packs
ii) 32 crayons = 1 pack
96 crayons = 3 × 32 crayons = 3 packs
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