The cost of tiling a room at the rate of 25 paise per sq.M is rs.120. It is found that when the length is reduced by 3 the total cost comes to around rs.105. Find the dimension of the room.
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Let the area be =xy where x be the length and y be the width. xy=120(1 /4)=40
(x-3)y=105(1/4)=34.75
xy-3y=34.75
40-3y=34.75 then y=1.75
x(1.75)=40
X=160/7
(x-3)y=105(1/4)=34.75
xy-3y=34.75
40-3y=34.75 then y=1.75
x(1.75)=40
X=160/7
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