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Question
The cost of carpeting a room 15 m long with a carpet 75 cm wide, at ₹ 70 per metre, is ₹ 8400. The width of the room is ______.
Options
9 m
8 m
6 m
12 m
MCQ
Fill in the Blanks
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Solution
The cost of carpeting a room 15 m long with a carpet 75 cm wide, at ₹ 70 per metre, is ₹ 8400. The width of the room is 6 m.
Explanation:
Length of the carpet = `"Total cost"/"Rate per metre"`
= `(8400/70) m`
= 120 m
Area of the room = Area of the carpet
= `(120 xx 3/4) m^2`
= 90 m2
Width of the room = `"Area"/"Length"`
= `(90/15) m`
= 6 m
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