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Q.
Laxmi and Prasanna set on a journey. Laxmi moves northwards at a speed of 20kmph and Prasanna moves southward at a speed of 30 kmph. How far will be Prasanna from Laxmi after 60 minutes ?
A.
24 km
B.
50 km
C.
42 km
D.
30 km
View Answer
Correct choice: B
Explanation:
We know 60 min = 1 hr Total northward Laxmi's distance = 20kmph x 1hr = 20 km Total southward Prasanna's distance = 30kmph x 1hr = 30 km Total distance between Prasanna and Laxmi is = 20 + 30 = 50 km.
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