A and B can polish the floor of building in 10 days.A alone can do 1/4 of it in 12 days.In how many days can B alone polish the floor?...... question of time and work
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Let A and B complete the work in A and B days respectively.
atq
A/4=12
=>A=48days
Since A and B together can complete the work in 10 days.
I. e. 1/A+1/B=1/48
A =48
=>1/48+1/B=1/10
=>1/B=1/10-1/48
=>1/B=(24-5)/240
=>B=240/19 days=12.63158....days=12-13days(approx)
atq
A/4=12
=>A=48days
Since A and B together can complete the work in 10 days.
I. e. 1/A+1/B=1/48
A =48
=>1/48+1/B=1/10
=>1/B=1/10-1/48
=>1/B=(24-5)/240
=>B=240/19 days=12.63158....days=12-13days(approx)
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