A gate having dimensions 2m X 1m is in the wall of 3m X5M. If the cost of colouring is Rs. 100 per m2,find the total cost of colouring the wall
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1700 rupees is correct answer
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you just remove the gate area from the wall area and multiply it with 100 as following
Wall area = 3*5 = 15m2
gate area = 2*1 = 2m2
area to be painted = 15-2 = 13m2
cost of colouring 1m2 area is 100rs
so cost of colouring 13m2 area will be = 13*100
= 1300rs.
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