in a hostel of 100 boys , the food provisions is for 40 days . If 60 more boys join the hostel, how long will the provisions last ?
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no of boys =100. - 160
days. = 40. - x
provision last for = 100x 40/ 160
= 25
days. = 40. - x
provision last for = 100x 40/ 160
= 25
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