Question

If a bus covers 195 km in 3 hours and a train covers 300 km in 4 hours, then the ratio of their speeds is

Options

• 13 : 15

• 15 : 13

• 13 : 12

• 12 : 13

Answer 1

13 : 15

`"Speed" = "Distance"/"Time"`

Speed of the bus = `(195 "km")/(3 "hr")` = 65 km/hr

Speed of the train = `"300 km"/"4 hr"` = 75 km/hr

Ratio = `65/75=(65 ÷ 5)/(75 ÷ 5) = 13/15` = 13:15