SSC CGL 12 Aug 2017 Shift 1 Paper

Question : 59 of 100

Marks: +1, -0

A starts from a point at a speed of 30 metre/second. After 3 seconds,

B

starts chasing

A

from the same point with a speed of 50 meter/second. What will be the total distance (in metres) travelled by

A

and

B

before

A

is caught by

B

Solution:

(2) The distance covered by

A

in 3 seconds

=30 ×3=90 {\m}

Let the distance covered by

B=d

metre
According to the question,

{d}/{50}= {d-90}/{30}

⇒

3 d=5 d-450

⇒

2 d=450

⇒

d= {450}/{2}

∴

d=225 {\m}

The total distance travelled by

A

and

B=2× 225=450 {m}

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