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प्रश्न
What will be the labour cost of laying the floor of an assembly hall that is 16 m long and 12 m wide if the cost of laying 1 sq m is 80 rupees?
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उत्तर
Area of rectangular floor
= length × breadth
= 16 × 12
= 192 sq. cm.
The cost of laying 1 sq.m. is 80 rupees.
Hence, the cost of laying 192 sq. m.
= 192 × 80 = 15,360 rupees.
∴ ₹ 15,360.
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