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20 Jan 2021, 03:15
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Difficulty:
35%
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Question Stats:
64% (01:41) correct
36%
(02:02)
wrong
based on 70
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A TV tower 36 metres high casts a shadow of 24 metres at a particular time of a day. What is the height of a minar with a three metre high flagstaff atop it, if both of these together cast a shadow of 50 metres at the same time of the day?
(A) 64 m
(B) 72 m
(C) 75 m
(D) 78 m
(E) None of these
(A) 64 m
(B) 72 m
(C) 75 m
(D) 78 m
(E) None of these
20 Jan 2021, 04:37
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Since the time of the day is the same, the triangles formed will be similar.
Let the height of the minaret = x
Then \(\frac{36}{24} = \frac{x + 3}{50}\)
\(\frac{3}{2} = \frac{x + 3}{50}\)
150 = 2x + 6
2x = 144
x = 72
Option B
Arun Kumar
Let the height of the minaret = x
Then \(\frac{36}{24} = \frac{x + 3}{50}\)
\(\frac{3}{2} = \frac{x + 3}{50}\)
150 = 2x + 6
2x = 144
x = 72
Option B
Arun Kumar
