19
Q:
A) 80 kms | B) 60 kms |
C) 45 kms | D) 32 kms |
Answer: B) 60 kms
Explanation:
Explanation:
Let 'd' be the distance and 's' be the speed and 't' be the time
d=sxt
45 mins = 3/4 hr and 48 mins = 4/5 hr
As distance is same in both cases;
s(3/4) = (s-5)(4/5)
3s/4 = (4s-20)/5
15s = 16s-80
s = 80 km.
=> d = 80 x 3/4 = 60 kms.