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An order was placed for supply of carpet of breadth 3 metres. The length of carpet was 1.44 times of breadth. Subsequently the breadth and length were increased by 25 and 40 percent respectively. At the rate of ₹ 45 per square metre, what would be the increase in the cost of the carpet?

a

₹1020.6

b

₹398.8

c

₹437.4

d

₹583.2

e

None of these

Answer : Option C
Explanation :

Area of the carpet = 3 × 3 1.44 m2

Total increase in area = 25 + 40 + 25×40100frac{{25 imes 40}}{{100}} = 75%

Increase in cost = 3 × 3 × 1.44 × 75 × 45100frac{{45}}{{100}} = ₹ 437.4

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