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Previous Year Paper

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CAT-2004-Previous Years Paper

Question
1 out of 35
 

Two boats, travelling at 5 and 10 km/h, head directly towards each other. They begin at a distance of 20 km from each other. How far apart are they (in km) one min before they collide?



A
B
C
D

Ans. C

The boats will be colliding after a time which is given by;

After this time of 80 min, boat (1) has covered km = km whereas boat (2) has covered km =

After 79 min, distance covered by the first boat

= d1=

After 79 min, distance covered by the second boat

= d2=

So the separation between the two boats = 20 –
(d
1+ d2) =

Alternative method

Relative speed of two boats = 5 + 10 = 15 km/h i.e., in 60 min they cover (together) = 15 km

In 1 min they will cover (together) km

CAT-2004-Previous Years Paper Flashcard List

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