A vagabond runs out of cigarettes. He searches
for the stubs, having learnt that 7 stubs can
make a new cigarette, good enough to be
smoked, he gathers 49 stubs, If he smokes
1 cigarette every three - quarters of an hour,
how long will his supply last ?
give solution with whole method
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Actually the answer is 5.25 hrs because:-
7 stubs = 1 cigarette
49 stubs = 7 cigars
1 cigar can last upto 3/4 hrs
7 cigars can last upto (3/4)*7 = 21/4=5.25
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