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 5 of 8.
Nayan said:
1 decade ago
Thnks nakul.
Sri said:
1 decade ago
@Ayoosh good explanation.
Koushik said:
1 decade ago
Excellent Ayoosh. Thank you very much.
Abhi said:
1 decade ago
Ayoosh explaination really helped me. Thanks Ayoosh :)
Ankit said:
1 decade ago
Thanks prajwal.
Sana said:
1 decade ago
hey golu..
we have two options for the value of 'x' :
x=97 or x=3;
97 is not chosen as value of 'x' because the width of the rectangular park is only 40 m.
and only the value 'x=3' is less than 40 m.
so, 'x=97' is not possible at all.
we have two options for the value of 'x' :
x=97 or x=3;
97 is not chosen as value of 'x' because the width of the rectangular park is only 40 m.
and only the value 'x=3' is less than 40 m.
so, 'x=97' is not possible at all.
Amrut said:
1 decade ago
thnks ayoosh & nakul
Golu said:
1 decade ago
Why 97 was not taken as answer?
Manish said:
1 decade ago
Thanks ayoosh.
Raji said:
1 decade ago
@Aysooh superb yar
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