1
Question
A dozen identical coins were stacked one above the other. Their total height was 3 cm 6 mm.
What is the thickness of one coin?
What is the thickness of one coin?
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Solution
One dozen coins = 12 coins
Total height of 12 coins = 3 cm 6 mm
= 3 × 10 mm + 6 mm
= 36 mm
Therefore, thickness of one coin = 36 ÷ 12
= 3 mm
Total height of 12 coins = 3 cm 6 mm
= 3 × 10 mm + 6 mm
= 36 mm
Therefore, thickness of one coin = 36 ÷ 12
= 3 mm
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