Question

the room is 13 M long and 9 M broad find the cost of carpeting a room with a carpet of width 65 CM @ rupees 65 per metre

Answer 1

Given :
Length of room (l) = 13 mBreadth of room (b)= 9 m
Breadth of carpet= 75 cm = 75/100= .75 m
[ 1 cm = 1/100]
Area of room = length × breadth
Area of room = 13×9 = 117 m²
Let Length of required carpet be x m 
Area of carpet = x × .75= .75x m²
Area of carpet = area of room
.75x = 117
x = 117 /.75 = 11700/75= 156
Length of carpet = 156 m
Cost of carpeting 1 m = ₹ 65
Cost of carpeting 156 m = 156 × 65 = ₹ 10140
Hence, the cost of carpeting = ₹10140
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Answer 2

Length of room (l) = 13 mBreadth of room (b)= 9 mBreadth of carpet= 75 cm = 75/100= .75 m[ 1 cm = 1/100]Area of room = length × breadthArea of room = 13×9 = 117 m²Let Length of required carpet be x m Area of carpet = x × .75= .75x m²Area of carpet = area of room.75x = 117x = 117 /.75 = 11700/75= 156Length of carpet = 156 mCost of carpeting 1 m = ₹ 65Cost of carpeting 156 m = 156 × 65 = ₹ 10140Hence, the cost of carpeting = ₹10140
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