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- The four walls and ceiling of a room of length 25 ft.
Question 1:
The four walls and ceiling of a room of length 25 ft., breadth 12 ft. and height 10 ft. are to be painted. Painter A can Paint 200 sqr.ft in 5 days, painter B can paint 250 sqr.ft in 2 days. If A & B work together, in how many days do they finish the job? A. 5 8/13
B. 5 11/12
C. 6 10/33
Feedback Total area to be painted = 25*12 +2(10*12 + 10*25) = 1040 sqr.ft
A paints = 200/5 = 40 sqr.ft per day
B paints = 250/2 = 125 sqr.ft per day
A + B = 40 + 125 = 165 sqr.ft
Number of days = 1040/165 = 6 10/33
A paints = 200/5 = 40 sqr.ft per day
B paints = 250/2 = 125 sqr.ft per day
A + B = 40 + 125 = 165 sqr.ft
Number of days = 1040/165 = 6 10/33
D. 7 6/11
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