Chocolate cost is Rs.1 and if we return 3 wrappers (covers) of chocolate we get 1 more chocolate. If you have Rs.15 how many chocolates do you get ?
Answer : I have Rs.15 = 15 Chocolates + 15 wrappers(covers)...
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a shop sells chocolates @ re 1 each. you can exchange 3 wrappers for 1 chocolates. if you have rs 21
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