Question

Q)Sunita and Sunil started walking to the east and to the north respectively from the same point and at the same speed. After 4 hours, the distance between them was 16√2. Then speed per hour=______.

a.l 7.5km/hr

b.) 8km/hr

c.) 4km/hr

d.) 9km/hr

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Answer 1

Answer:

c. 4 Km/hr

distance =x

x^2 = ((16√2) ^2)/2

x^2=512/2

x^2=256

x=16;

speed=distance/time ;so,

s=16/4;

s=4 km/hr;