n(S) = ¹⁰C₂ n(E) = ²C₂ + ⁵C₂ P (E) = (²C₂ + ⁵C₂ )/(¹⁰C₂ ) = 11/45
(y+40) boys can do a piece of work in (z-20) days. (y-5) boys can do the same piece of work in (z+20) days. If (y+30) boys can do the same piece of work...
A red JCB machine can complete the excavation of a field in 10 days, while a green JCB machine can accomplish the same task in 15 days. If both machines...
A and B together can do a piece of work in (p-8.8) days.The efficiency of D is 10% less than the efficiency of B. A and C together can do the same piece...
‘A’ alone can complete a work in 50 days while ‘A’ and ‘B’ together can complete the same work in 20 days. How much percentage of the work, ...
P alone can finish a piece of work ‘M’ in 8 days while Q takes 4 days to finish it alone. P, Q and R working together can finish the work &l...
Ram can produce 5 pots in a day. Rahul is 40% faster than Ram in pot-making. Together, they work for a period of 55 days, resulting in the production of...
Ratio of the work done by P, Q and R in one day is 5:3:7 respectively. They all together can complete the work in 35 days. Q and R worked on it for 20 d...
60 men can complete a piece of work in 12 days. 12 men started the same work and worked for 10 days, and then joined by ‘x’ more men such that the r...
A and B together can complete a piece of work in 36 days while A and C together can complete the same work in 39 days. If A, B, and C together can compl...
Arjun, Bharat and Chintu together can complete a task in 8 days. Bharat is 25% less efficient than Arjun. Arjun and Chintu together can complete the tas...
