Cost of book + cost of pencil box + ₹32.75 = ₹100
⇒ Cost of pencil box = ₹100 - cost of book - ₹32.75
⇒ Cost of pencil box = ₹100 - ₹24.75 - ₹32.75
100.00
−32.75
−24.75
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42.50
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The cost of the pencil box is ₹42.50
In fractional form we can write it as 4212.