operations on numbers (6.papers)

hcf and lcm (5.papers)

averages (8.papers)

problems on ages (9.papers)

percentage (4.papers)

profit and loss (4.papers)

ratio and proportion (5.papers)

chain rule (5.papers)

time and work (4.papers)

pipes and cisterns (5.papers)

time and distance (5.papers)

problems on trains (8.papers)

boats and streams (7.papers)

partnership (6.papers)

simple interest (4.papers)

compound interest (2.papers)

permutation and combination (3.papers)

clock (2.papers)

calendar (3.papers)

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4

A boatman can row 2 km against the stream in 20 minutes and return in 18 minutes. Find the rate of current

1/3

1/6

1/9

None

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18

The speed of a boat in still water is 24 km/hr and the rate of current is 4 km/hr. Find the distance covered while going downstream in 15 mins ?

7.6 km

7 km

8 km

9 km

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19

A boatman can row at 6 kmph in standing water and the speed of the current is 3 kmph. If it takes him 1 hour to row to a place and come back then find how far is that place.

0.4 km

1 km

2 km

3/4 km

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20

A boat can travel with a speed of 16 km/hr in still water. If the rate of stream is 5 km/hr, then find the time taken by the boat to cover distance of 84 km downstream.

4 hours

5 hours

6 hours

7 hours

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