The length of a rectangular floor is more than its breadth by 200%. If is rs.324 is required to paint the floor at the rate of rs.3per sq.m, then what would be the length of the floor?
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Let length be l and Breadth be b
Thus According to question
l = 200/100*b + b
l = 3b
Cost of Covering 1 m sq area = 3 Rs
Thus Cost of covering x m Sq area = 324 Rs
Cross Multiplying the above we get
x = 324/3
x = 108 m sq
and we know
area = l * b
x = l * b
108 = 3b * b
b^2 = 36
b = 6
thus length l = 3b
l = 3*6
l = 18 m
thus length is 18 m
Thus According to question
l = 200/100*b + b
l = 3b
Cost of Covering 1 m sq area = 3 Rs
Thus Cost of covering x m Sq area = 324 Rs
Cross Multiplying the above we get
x = 324/3
x = 108 m sq
and we know
area = l * b
x = l * b
108 = 3b * b
b^2 = 36
b = 6
thus length l = 3b
l = 3*6
l = 18 m
thus length is 18 m
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