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21. Cost of 105 envelopes is Rs 35. How many envelopes can be purchased for Rs 10

Answer»

Number of envelopes in ₹35=105Number of envelopes in ₹1=105/35=3

Number of envelopes in ₹10=3*10=30

cost of 105 envelopes is 350 rupees. how many envelopes can be purchased for 100 rupees



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