120 mens have provisions for 120 days. after 5 days, 30 men died due to a disease. how long will the remaining food last.
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let the food last for x days
120*120 = 120*5 + 90x
14400 = 600 + 90x
90x = 13800
x = 1380/9
x = 153 3/9
x = 153 1/3
the food will lasts for 153 1/3 days
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