Question
A boat's speed in still water is 12 km/hr, and the
current’s speed is 4 km/hr. If the boat takes a total of 18 hours to travel ‘x’ km each in both directions, find ‘x’.Solution
ATQ, Downstream speed = 12+4=16 km/hr
Upstream speed = 12−4=8 km/hr 
Taking LCM of 16 and 8, 
- A can complete a piece of work in 80 days, B takes 20% more time than A to complete the same work while C takes 25% more time than B to complete the whole ...
‘A’ and ‘B’ can do a piece of work in 22 days and 25 days, respectively. If they started the work together and worked on it for 6 days, then fin...
A and B together, B and C together and A and C together can complete a piece of work in 80 days, 60 days and 70 days respectively. Find the ratio of the...
'Akshay' alone takes 18 days to finish a work while 'Bhim' alone takes 24 days to finish the same work. If 'Akshay' and 'Bhim' work on alternate days st...
A and B individually can complete the work in 32 days and 48 days respectively. If the time taken by C alone to complete the work is 1.25 times the time...
A takes 24 hours more than B to complete the work, and 32 hours more than C to complete the same work. The combined time taken by A and B to finish the ...
'A' can do 50% of work in 10 days, whereas 'B' can do 25% of the same work in 8 days. 'A' and 'B' started the work, but 'B' left the work 'n' days befor...
A man, a woman and a boy can do a work in 4, 8, 32 days respectively. How many boys are required with 1 man and 1 woman to complete the same work in 1/4...
15 people can paint a house in 5 days using 15 paintbrushes. In how many days can 10 people paint the same house using p paintbrushes?
- 'X', 'Y', and 'Z' can complete a job individually in 20 days, 30 days, and 24 days respectively. 'Y' and 'Z' begin the task together. After 6 days, 'Z' lea...
Relevant for Exams:
