The total cost of laying tiles on a rectangular floor at Rs. 12 per m. is Rs. 3840,-
The breadth and the length of the rectangle are in the respective ratio of 4 : 5.
What is the length of the floor ?
20
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Area of rectangular =3840/12 = 320
l*b=320
4x*5x= 320
x=4
length 5 parts so 5*4=20 final answer
Hope it is helpful....☺
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