Question

76 ladies can do a job in 33 days. Due to some reason,
some ladies did not join the work and therefore, it
was completed in 44 days. The number of ladies who
did not join the work is​

Answer 1

Answer:

The number of ladies who did not join work is 19

Step-by-step explanation:

76 ladies can do a job in 33 days.

=> The entire job is worth 76*33 = 2508 mandays

Now, we are given that some number of ladies left the job and the job was completed in 44 days.

If the job worth 2508 mandays was completed in 44 days, it means that the number of ladies on the job = 2508/44 = 57

=> There were 57 ladies on the job

=> The number of ladies that did not join work = 76 - 57 = 19

Ans: 19 ladies did not join work

Note: mandays is an expression that shows the "worth" of the job in terms of number of people and number of days.

1 manday = work that can be done by 1 person in 1 day

If a job needs 100 mandays it could mean several things, like:

1. 1 person will take 100 days to finish the job

2. 100 persons will take 1 day to finish the job

3. 2 persons  will take 50 days to finish the job, and so on.

It is important to find the total mandays required fora job, and accordingly choose the number of persons and the number of days. If more persons are  on the job, the number of days required will be less.

Mathematically,

No. of persons and number of days have an inverse relationship, such that their product is constant. This product is called mandays.