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A lamp post of length 10 m casts a shadow of length 7.5 m. At the same time, a man casts a shadow of length 135 cm. What is the height of the man (in m)?
(a) 170 (b) 180 (c) 1.8 (d) 1.6

Read Solution (Total 4)

c.1.8 m

Acc. 2d Given Data: tan X = p/b = 10/7.5 = 4/3

==> In d man's case, Height = shadow length * tan X = (135 * 4/3)cm =180cm =1.8m
12 years agoHelpfull: Yes(9) No(0)

10/7.5=x/135 , where x is height of man
thus, x=135*10/7.5
12 years agoHelpfull: Yes(3) No(0)
shadow has reduced by 25% of total height... so go by option
180/100*25=45
add 135+45=180
expressing in meters so..
1.8m
12 years agoHelpfull: Yes(3) No(0)
7.5/3=2.5 ,=>7.5+2.5=10,....135/3=45,=>135+45=180...in meter 1.8
12 years agoHelpfull: Yes(0) No(0)

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