SSC CHSL Model Paper 7

Question : 29 of 100

Marks: +1, -0

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

₹1020.6
₹398.8
₹437.4
₹583.2

Validate

Solution:

Initial area of the carpet

= 3 × (3 ×1.44)

sq. metre
= 12.96 sq. metre
After corresponding changes in dimensions,
Area of the carpet

=(3×125/100)×(3×1.44×140/100)

= 22.68 sq. metre
∴ Increase in area

= (22.68- 12.96)

sq. metre = 9.72 sq. metre
∴ Increase in the cost

= \₹ (9.7 2×4 5 )= \₹437.4

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