Question
How much time a train 200 metres long running at the
speed of 72 km/hr take to cross a bridge 180 metres in length?    ÂSolution
Distance (Length of the train + length of the bridge) = 200 + 180 = 380 Speed of Train = 72 km/hr = 72×5/18  = 20 m/sec.  Time = Distance/Speed  = 380/20  = 19 sec.
K and L can complete a work in 16 days. If K alone can complete it in 48 days, how long will L take to complete the work alone?
A and B together can complete a piece of work in 12 days. B and C together can complete it in 16 days. C and A together can complete it in 24 days. The...
P, Q and R can finish a job in 45 days, 60 days and 90 days respectively. P and Q work together for 12 days. How long will R take to finish the leftover...
Pawan, Bittu, and Raju can individually complete a task in 36 days, 60 days, and 30 days, respectively. They all begin working together, but Raju stops ...
‘A’ is 20% more efficient than ‘B’. ‘A’ and ‘B’ work together for 6 days after which ‘A’ is replaced by ‘C’. ‘B’ and ‘C�...
A alone can complete a work in 16 days and B alone in 12 days. Starting with A, they work on alternate days. In how many days, total work will be comple...
Ajay alone can complete a work in 10 days and Bittu alone can complete the same work in 15 days. Ajay starts the work alone and after three days Bittu j...
‘A’ and ‘B’ can do a piece of work in 30 days and 40 days, respectively. They started working together but ‘A’ left after 9 days. Find the t...
A can do a piece of work in 12 days, while B alone can do it in 18 days. They work together for 6 days and the rest of the work is completed by C in 4 d...
40 men can complete a piece of work in 48 days. ‘x’ men started the work and after 33 days 64 more men joined them so that whole work was finished i...
Relevant for Exams:
