Question

11. A bus covered a distance of 160 km in 4 hours,
covering a part of it at 30 km/hr and the remaining
at 70 km/hr. For how much time did the bus travel
at 70 km/hr?
(1) 1/2hour . (2) 1 hour
(3) 3/2hours (4) 2 hours​

Answer 1

Answer:

1hr option(2) is correct

Step-by-step explanation:

x/30 + (160-x)/70 = 4

x = 90

at 70 km/hr for (160-90)/70 = 1 hr

Answer 2

Answer:

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