Question
What is the purpose of a weak entity in the ER
model?Solution
To represent entities that depend on another entity for identification  Â
A alone can complete 50% of a work in 20 days while B takes 16 days more than A to complete it. If B and C together can complete the work in 24 days, th...
A and B together can finish a work in 10 days. If A alone can finish it in 25 days, in how many days can B alone finish it?
Vijay can do a piece of work in 32 days and Sanjay can do the same work in 48 days. If Vijay works for 2 days and got Rs. 960, and the remaining work wi...
An elephant can do a work as fast as two horses ‘A’ and ‘B’ can do it by working together. If horse ‘A’ alone can complete the work in 38 ho...
Lucas, Maya, and Riley can build a wall in 5, 10, and 15 days respectively. If they start the job together and Lucas leaves 3 days before the job is don...
A robot can finish a task as quickly as two humans, 'E' and 'F', together. If human 'E' can finish the task in 8 hours and human 'F' in 24 hours, how lo...
Pawan completes 40% of a task in 6 days. His efficiency is 100% greater than Qureshi's. How many days will it take for both Pawan and Qureshi, working t...
- Alex and Ben can complete a job individually in 14 days and 21 days, respectively. If they take turns to work one day each, beginning with Alex, how long w...
A, B, and C together can complete the assignment in 8 days. B and C together take (48/5) days, and C alone completes half in 8 days. Find the ratio of t...
Anita started working and left after 3 days and aftere that Binita started the rest work and finished it in another 5 days. Had Anita left the work afte...
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