Q20 . X is standing at an intersection where two roads intersect at right angles. He observes through his binoculars that two cars start moving towards the intersection at the same time along the intersection at the same time along these two roads. One of them is moving at a speed of 13.333 m/s and starts at a point 40 km form the intersection . The second car is moving at 10m/s and starts at a point 50km from the intersection . In how many min from the start will the distance between the two be minimum?
a. 83
b. 62
c. 50
d. (a) or (b)
a. 83
b. 62
c. 50
d. (a) or (b)
Last edited by hemant_rajput on Mon Feb 04, 2013 7:24 am, edited 1 time in total.
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