1 votes 1 votes 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 condition will be? $10$ m $12.5$ m $17.5$ m $21.25$ m Quantitative Aptitude nielit2017july-scientistb height-distance + – Lakshman Bhaiya asked Mar 30, 2020 • edited Jun 7, 2020 by go_editor Lakshman Bhaiya 13.8k points 1.0k views answer comment Share See all 0 reply Please log in or register to add a comment.
2 votes 2 votes Let the height of the building be x metres. According to question we understand Less lengthy shadow Less in height (Directly Proportional) so, 40.25 : 17.5 :: 28.75 : x => x = (28.5 * 17.5) / 40.25 = 12.5 metres So, correct answer is B topper98 answered Jun 2, 2020 topper98 58 points comment Share See all 0 reply Please log in or register to add a comment.
0 votes 0 votes shadow of length 40.25 m = 17.5 m high shadow of length 1 m = 17.5/40.25 m high shadow of length 28.75 m = 28.75×17.5/40.25= 12.5 m high Asim Siddiqui 4 answered Apr 12, 2021 Asim Siddiqui 4 58 points comment Share See all 0 reply Please log in or register to add a comment.