It should be 5,000, shouldn't it? Here is the explanation:Since 4/5th of his earnings is 4000, 1/5th should be 1000. He should earn 5000. What do you think?
SOLUTIONANS=C3rd multiple of 11 is 33Factors of 8 are 1,2 and 8Factors of 10 are 1,2,5 and 10Common Factors of 8and10 are 1and2Their difference-2-1=1required sum-33=1=34So ans is ''C-34''