Math, asked by roysompa6899, 1 year ago

The four walls and ceiling of a room of length 25 m, breadth 12 m and height 10 m are to be painted. painter a can paint 200 m2 in 5 days, painter b can paint 250 m2 in 2 days. if a and b work together, they will finish the job in

Answers

Answered by Anonymous
2
☆ranshsangwan☆

Area of four walls and ceiling of the room
 = 2(l + b) x h + l x b
 = 2 x 10 (25+12) + 25 x 12
 = (20 x 37 + 300) 
 = (740 + 300) m2
= 1040 m2
Area painted by A in 1 day = (200/5) = 40 m2.
Area painted by B in 1 day = (250 /2) = 125 m2
Area painted by both in 1 day = (125 + 40) m2 = 165 m2
?  Required time = (1040 /165) = 208/33 


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