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Question
Shashi used addition to solve a word problem about the weekly cost of commuting by toll tax for ₹ 15 each day. Ravi solved the same problem by multiplying. They both got the correct answer. How is this possible?
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Solution
By addition method,
Total weekly cost = (15 + 15 + 15 + 15 + 15 + 15 + 15) = ₹ 105
By multiplication method,
Total weekly cost = Cost of one day × Seven days = 15 × 7 = ₹ 105.
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