Question:A rectangular lawn 55 m by 35 m has two roads each 4 m wide running in the middle of it, one parallel to length and the other parallel to breadth. The cost of gravelling the roads at 75 paise per sq. metre is : 

A `Rs. 270` 
B `Rs. 262.50` 
C `Rs. 258` 
D `Rs. 254.50` 

+ Answer
C 

+ Explanation
Area of cross roads` = (55 xx 4 + 35 xx 4 - 4 xx 4) m^2`

                              `= 344 m^2`

:. cost of gravelling`= Rs. (344 xx 75/100)`

                              `= Rs. 258`

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Irin Moni

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