Are the following statements true ?
45 km : 60 km = 12 hours : 15 hours.

Are the following statements true? (a) 40 persons : 200 persons = Rs 15 : Rs 75 (b) 7.5 litres : 15 litres = 5 kg : 10 kg (c) 99 kg : 45 kg = Rs 44 : Rs 20 (d) 32 m : 64 m = 6 sec : 12 sec (e) 45 km : 60 km = 12 hours : 15 hours

Two trains are moving in opposite directions at speeds of 60 km/hour and 90 km/hour. Their lengths are 1.10 km and 0.9 km respectively. The time taken by the slower train to cross the faster train in seconds is

Find the ratio of the following.(a) Speed of a cycle 15 km per hour to the speed of scooter 30km per hour.(b) 5m to 10km(c)50 paise to Rs 5

A boat goes 25km upstream and 35km downstream in 10 hours.In 15 hours,it can go 40km upstream and 49km downstream. Determine the speed of the stream and that of the boat in still water.

A car is travelling at an average speed of 60 km per hour. How much distance will it cover in 1 hour 12 minutes?

A speed of 45 km per hour is the same as

A boatman rows to a place 45 km distant and back in 20 hours. He finds that he can row 12 km with the stream in same time as 4 km against the stream . Find the speed of the stream.