A bus covered 630 kms in 9 hours, if it travels at one-seventh of its usual speed. Then how much more time will it take to cover the same distance?
Answer & explanation
Correct answer: option 1
S = \(\frac{D}{T}\)
S = \(\frac{630}{9}\) = 70 km/h
\(\frac{1}{7}\)th of S = 10 km/h
New Time = \(\frac{630}{10}\) = 63 h