Number of days Anjali can make a complete test in 20 hrs, but she only works at this rate for 10 hrs. After that, if she works at a rate such that she can make the complete test in 16 hrs, then can you tell us the total time taken by Anjali to make the test?
Answers
Answer:
26 maybe I am not sure but 26 maybe
The total time taken by Anjali to make the test is 18 hrs.
Step-by-step explanation:
Given:
Anjali can complete test in 20 hrs, but she only works at this rate for 10 hrs.
if she works at a rate such that she can complete test in 16 hrs,
To Find:,
The total time taken by Anjali to complete the test .
Formula Used:
If K can do a piece of work in Z days, then K’s one day’s work = 1/Z
If K’s one day’s work = 1/Z, then K can finish the work in Z days.
Total work / Number of days = Efficiency.
Solution:
Anjali efficiency in first 10 hrs= 1/20
It mean that Anjali done 10 x(1/20) work in 10 hours
Completed 1/2 work in first 10 hours
Remaining work will be [1-(1/2)] = 1/2
But after 16 hrs Anjali efficiency change .
Now Anjali complete the whole work in 16 hours
Anjali complete the 1/2 work in 16/2 = 8 hours
So total work complete in (10 +8)hours = 18 hours
Thus, The total time taken by Anjali to make the test is 18 hours.