(1). A boat goes 15 km/hr in still water. It takes twice as long time to go upstream as to down the river. What is the speed of current?

• (a). 7km/hr
• (b). 5km/hr
• (c). 6km/hr
• (d). 8km/hr
• (e). None of these

(2). A boat goes 24 km/hr in still water. It takes thrice as long time to go upstream as to down the river. What is the speed of current?

• (a). 48km/hr
• (b). 12km/hr
• (c). 8km/hr
• (d). 6km/hr
• (e). None of these

(3). Speed of a motorboat in still water is 45 km/hr, if the motorboat travels 80 km along the stream in 1 hour 20 minutes, then the time taken by it to cover the same distance against the stream will be.

• (a). 6hr
• (b). 1hr 34min
• (c). 2hr 40min
• (d). 2hr 30min
• (e). None of these

(4). A motorboat travels 120km along the stream in 2 hour, if Speed of the motorboat in still water is 50 km/hr, then the time taken by it to cover the same distance against the stream will be.

• (a). 4hr
• (b). 3hr
• (c). 2hr 30min
• (d). 1hr 34min
• (e). None of these

(5). A motorboat in still water travels at a speed of 36kmph. It goes 56 km upstream in 1 hour 45 minutes. The time taken by it to cover the same distance down the stream will be:

• (a). 1hr 40min
• (b). 1hr 24min
• (c). 2hr 30min
• (d). None of these
• (e). None of these

(6). A boat rows 1 km in 5minutes, along the stream and 6 km in 1hour against the stream. The speed of the steam is

• (a). 9km/hr
• (b). 4km/hr
• (c). 3km/hr
• (d). 21 km/hr
• (e). None of these

(7). A boat rows 15 km in 30 minutes, along the stream and 3 km in 15 minutes against the stream, then speed of the boat in stationary water.

• (a). 21 km/hr
• (b). 9 km/hr
• (c). 42 km/hr
• (d). 4km/hr
• (e). None of these

(8). A man can row 7 km/hr in still water. In a stream is flowing at 3 km/hr, it takes him 7 hour to row to a place and back. How far is the place?

• (a). 18 km
• (b). 20km
• (c). 15km
• (d). 4.55km
• (e). None of these

(9). A man can row 6 km/hr in still water. When the river is running at 1.2 km/hr, it takes him 1 hour to row to a place and back. How far is the place?

• (a). 2.88 km
• (b). 5km
• (c). 4.55km
• (d). 15km
• (e). None of these

(10). A man can row at a speed of 4.5km/hr in still water to a certain upstream point and back to the starting point in a river which flows at 1.5 Km/hr. find his average speed for total journey.

• (a). 4km/hr
• (b). 3km/hr
• (c). 5km/hr
• (d). 3km/hr
• (e). None of these