A camp has 20 days ration for 40 troops . If after 5 days , 10 troop arrive, then , for how many days will the ration be sufficient ?
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total food be 40 × 20 = 800
that is per day food = 40
so 5 days food = 200
so food left after 5 days = 600
and members = 30
that is 600 = 50 × x
x = 12 days
that is per day food = 40
so 5 days food = 200
so food left after 5 days = 600
and members = 30
that is 600 = 50 × x
x = 12 days
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