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Question
A family of 5 persons can be maintained for 20 days with Rs.2,480. Find, how long Rs.6944 maintains a family of 8 persons?
Solution
A family of 5 persons can be maintained with Rs.2480 for = 20 days
A family of 5 persons can be maintained with Rs.1 for =`20/2480` days
A family of 5 persons can be maintained with Rs.6944 = `20/2480xx6944=1/124xx6944`
= 56 days
A family of 1 person can be maintained
= 56 × 5 days
A family of 8 persons can be maintained
= `(56xx5)/8` days
= 7 × 5 days
= 35 days
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