Aptitude - Area - Discussion
Discussion Forum : Area - General Questions (Q.No. 5)
5.
A rectangular park 60 m long and 40 m wide has two concrete crossroads running in the middle of the park and rest of the park has been used as a lawn. If the area of the lawn is 2109 sq. m, then what is the width of the road?
Answer: Option
Explanation:
Area of the park = (60 x 40) m2 = 2400 m2.
Area of the lawn = 2109 m2.
Area of the crossroads = (2400 - 2109) m2 = 291 m2.
Let the width of the road be x metres. Then,
60x + 40x - x2 = 291
x2 - 100x + 291 = 0
(x - 97)(x - 3) = 0
x = 3.
Video Explanation: https://youtu.be/R3CtrAKGxkc
Discussion:
75 comments Page 6 of 8.
Vijeta said:
8 years ago
Nice explanation. Thank you all.
Golu said:
1 decade ago
Why 97 was not taken as answer?
Peter said:
1 decade ago
@Rkbm your answer best answer.
Shreya said:
1 decade ago
My doubt is
60x+40x-x2=291?.
60x+40x-x2=291?.
Ammu said:
9 years ago
Thanks for the explanation.
ARAVIND said:
9 years ago
Great explanation @Ayoosh.
Ammu said:
2 years ago
Thank you for explaining.
(3)
Sri said:
1 decade ago
@Ayoosh good explanation.
Amrut said:
1 decade ago
thnks ayoosh & nakul
Sk Rahad Mannan said:
7 years ago
Thanks @Ayoosh, @Tanya.
(2)
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