Latest Infosys Aptitude Question SOLUTION: if A and B are travelling from a same point at 8am. if A goes east with 65m/s and B goes south with 60m/s. what will be the time when they are 130m apart?

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if A and B are travelling from a same point at 8am. if A goes east with 65m/s and B goes south with 60m/s. what will be the time when they are 130m apart?

Asked In Infosys jalla aswini (9 years ago)

Solved tirupathi reddy Read Solution (6)

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Read Solution (6) :

tirupathi reddy  (9 years ago) Best Solution

Ans: 08:00:00 + 1.47sec

(65*x)^2 + (60*x)^2 = 16900

x^2(7825)=16900

x^2 = 2.1597.
By solving we get x= 1.47 sec (approx)

Here is explanation....

A is travelling towards east with speed of 65 m/s.
B is travelling towards south with speed of 60 m/s.
The distance between them is 130 m.

In one sec, A travels 65 m and B travels 60 m.
65^2+60^2=7825
But we have to get 16900(130*130) by following Pythagorean theorem.

Let check for 2 sec, the value

Is this solution Helpfull? Yes (17) | No   

Nitish saxena  (9 years ago)

solve using pyth theorem of right triangle answer is 2 hours or 10:00am

Is this solution Helpfull? Yes (1) | No   

Asim Kumar Manna  (9 years ago)

Answer is 1.47sec

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FAISAL SK  (9 years ago)

after 1.47 sec. the distant b/t them will be 130m

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ANUSHA Y  (9 years ago)

not 130m
it is 130miles

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raghuram  (9 years ago)

2hrs by using pytgarus theorem

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