Aptitude - Chain Rule - Discussion
Discussion Forum : Chain Rule - General Questions (Q.No. 11)
11.
A flagstaff 17.5 m high casts a shadow of length 40.25 m. The height of the building, which casts a shadow of length 28.75 m under similar conditions will be:
Answer: Option
Explanation:
Let the height of the building x metres.
Less lengthy shadow, Less in the height (Direct Proportion)
40.25 : 28.75 :: 17.5 : x 
40.25 x x = 28.75 x 17.5
| x = | 28.75 x 17.5 |
| 40.25 |
x = 12.5
Discussion:
12 comments Page 2 of 2.
Shiva said:
9 years ago
How can you say shadows height is directly proportional to the height of the building?
Nima Tenzin said:
3 years ago
Please explain the answer.
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