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Sanjukta

· started a discussion

· 1 Months ago

Aptitude (Question: 125890.0 )

Question 25

Question:
A rectangular lawn 60 × 40m2 has two roads each 5m wide running between the park. One is parallel to length and other is parallel to width. Cost of gravelling is 60 paise/m2. Find the total cost of gravelling?

Options:
A) Rs.285
B) Rs.300
C) Rs.275
D) Rs.270
E) None of these
Solution:

Area of path = x(l + b – x) 

= 5(60 + 40 – 5)

= 5 × 95 = 475 m2

∴ Total cost = 475 × \(\cfrac{60}{100 }\) = Rs.285

Knowledge Expert

· commented

· 1 Months ago

Rs.285 is the correct answer. Do recheck your arrangement
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