Question
'Pooja' can complete a work in 28 days. She started the
work and left after 14 days from starting. The remaining work was done by 'Ritika' in 21 days. Find the time taken by 'Ritika' to complete 50% of the work.Solution
ATQ,
Fraction of work completed by 'Pooja' = (14/28) = (1/2)
Remaining work = 1 - (1/2) = (1/2)
Time taken by 'Ritika' to complete (1/2)th of the work = 21 days
Time taken by 'Ritika' to complete the whole work = 21 × (2/1) = 42 days
Therefore, time taken by 'Ritika' to complete 50% of the work = 0.5 × 42 = 21 days
'Sita' can complete some work alone in 20 days. 'Geeta' is twice as efficient as 'Reeta' and three times as efficient as 'Sita'. If 'Sita' and 'Reeta' s...
A and B together can do a piece of work in 30 days, B and C together can do it in 20 days. A starts the work and works on it for 5 days, then B takes it...
A and B individually can complete the work in 28 days and 42 days respectively. If the time taken by C alone to complete the work is 1.25 times the time...
A and B together can do a piece of work in 15 days which B and C together can do in 20 days. After A has been working at it for 3 days and then by B for...
V and N, working individually, can complete a task in (w – 2) days and (w + 4) days, respectively. N initiated the task alone and was later joined by ...
24 men can complete 3/5 part of a work in 8 days working 9 hours a day. How many women can complete rest of the work if they work for 8 hours a day for ...
A, B, and C can together complete a task in 12 days. A and B can complete the same task in 16 days, and B and C can complete it in 20 days. In how many ...
A man, a woman and a boy can do a work in 3, 2, 6 days respectively. How many children were required with 1 man and 1 woman to complete the same work in...
‘A’ and ‘B’ can complete a certain work in 12 days and 24 days, respectively. They started working together and worked till completion of the wo...
‘A’ and ‘B’ can do a piece of work in 17 days and 34 days, respectively. They started working together but ‘A’ left after 4 days. Find the t...
Relevant for Exams:
