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Raj takes a certain number of rotis during lunch but always wastes half a roti.riya takes half the number of rotis as raj and always finishes her share.after 20 days if the number of rotis that were consumed during lunch by them together is 110 (excluding the wasted rotis)then find the number of rotis per meal that raj and riya take. how many rotis were wasted in 20 days

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by seemayogi504

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