एन वी कैन डू पॉलिश द फ्लोर ऑफ द बिल्डिंग इन इट इज ए अलोन कैन डू फॉर वन अपॉन 6 ऑफिस जॉब इन 4 डेज हाउ मेनी डेज बिफोर द फ्लोर
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Step-by-step explanation:
Step-by-step explanation:Let us assume B alone can polish the floor in x days.
So in 1 day B alone will polish 1/xth part of the floor.
A & B jointly can polish the floor in 18 days.
So in I day both A & B together can polish 1/18th part of the floor.
A alone can polish 1/6th part in 4 days,
so in 1 day A can polish 1/(6×4)=1/24th part.
So as per logic 1/x+1/24=1/18, or,1/x=1/18–1/24=1/72. or x=72 days.
B alone will polish the floor in 72 days.
hope it helps you.......
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