Latest Elitmus Aptitude Question SOLUTION: ABC is scalene triangle. Its angle A is kept constant, rest sides are tripled in length such that AC'=3AC and AB'=3AB. how much is the area increased in triangle AB'C' from ABC? 1)

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(#M40154587) ELITMUS Numerical Ability question goemetry Keep an EYE

ABC is scalene triangle. Its angle A is kept constant, rest sides are tripled in length such that AC'=3AC and AB'=3AB. how much is the area increased in triangle AB'C' from ABC?
1)800% 2)850% other options i don't remeber

Asked In Elitmus Priyank shishodia (8 years ago)

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vipul kumar  (8 years ago)

Ans: 800%

Scalene Triangle-
A triangle with all sides of different lengths and different angle.
Let us assume triangle(ABC) having sides 3,4,5 and angle A = 90degree.
Hence Ar(ABC) = 1/2 * 3* 4 = 6.
Similarly, assume triangle AB'C' where AB' = 3AB, AC' = 3AC' (A/Q)
Hence Ar(AB'C) = 1/2 * 9 * 12 = 54.

Difference = 54-6 = 48.
% CHANGE = 48 * 100/ 6 = 800% Ans :-)..;

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NAVEEN KUMAR  (8 years ago)

sorry ...area increase 800%(((54-6)/6)*100=800)

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NAVEEN KUMAR  (8 years ago)

let any right angle triangle whose size(3,4 & 5)---->also called scalene triangle because size r different
then Area=1/2*base*height=0.5*3*4=6
take any angle cont.(i take 90 angle constant..)
then sides r=9,12,15(After increase three times two sides,then also increase third side)
hence,Area=0.5*9*12=54
AREA INCREASED BY 900%

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shalini kumari  (8 years ago)

for clear understand implemate in picturally
TRAINGLE AB'C' is divided then 3 parallograms
and 3 triangle of ABC area
each parallogram is 2 times of ABC area
3 parallogram =6 times of ABC
so 600+300=900
so answer is

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sachin kumar  (8 years ago)

Answer : the five digit no. X will be divisible only when it has 5 "or" 0 in the one's position .. and the a five digit no. is possible when the one's position is 0, 1, 2, 3, 4 ,5 ,6 ,7 , 8, 9 ..i.e, in 10 ways ..but for divisibility from 5 there are 5 cases possible when in these digits are in one's position 1=> 1+4=5 , 3=>1+4=5,7=>1+4=5,9=>1+4=5
So, 4/10 = 2/5 Answer

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