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Question

Find the total cost of fencing and ploughing a rectangular field (16 m×8 m) at the rate of ₹. 10/m and . 10/m2 respectively.

 



Your Answer
A

₹ 1700

Your Answer
B

₹ 1750

Correct Answer
C

₹ 1760

Your Answer
D

₹ 1660


Solution

The correct option is D

₹ 1760


Step 1: Find the perimeter of the field.

Perimeter =2(l+b)=2(16 m+8 m)=2×24 m=48 m

Step 2: Find the area of the field.

Area =lb=16 m×8 m=128 m2

Step 3: Find the cost of fencing by multiply the quantity obtained in Step 1 by . 10/m.

Cost = 10×48 m=. 480 m 

Step 4.: Find the cost of ploughing by multiplying the quantity obtained in Step 2 by ₹ 10/m2.

Cost =.10/m2×128m2=. 1280

Step 5: Find the total cost by adding the quantities obtained in steps 3 and 4.

Total cost = ₹. (480 + 1280) = ₹ 1760

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