Question

Nikita is travelling by a car.she finds a milestone where this is written that destination distance is 78.9 Km.after 1 hour again she finds another milestone & now it is written that her destination distance is 29.05 km.how much distance she has covered with in this 1 hour?

Answer 1

The distance she has covered within this hour =
78.9-29.05 = 49.85 km
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Answer 2

Here,
First milestone regards=78.9km
Now,after 1 hour
second milestone regards=29.05km
then

distance travelled=(78.9-29.05)km=49.85km
So
she has covered 49.85km in this 1 hour