SOLUTION: In 4 weeks, Mark earns an average of $400 per week. If, after working another 2 weeks at a constant salary, his average earnings per week become $500 how much did he earn in the t

Question 980923: In 4 weeks, Mark earns an average of $400 per week. If, after working another 2 weeks at a constant salary, his average earnings per week become $500 how much did he earn in the third week?
F. $33.33
G. $100.00
H. $600.00
J. $700.00
K. $900.00
Please explain this problem to me, I still don't get it! Thanks?
PS: I originally got J for this problem but I am starting to regret this because it is asking for the third week!
Answer by solver91311(24713) (Show Source): You can put this solution on YOUR website!

There is no way to know the exact amount that was earned in the third week. All you know is that for the first 4 weeks he earned a total of $1600 and that over the entire 6 weeks he earned $3000. Furthermore, since the last two weeks were constant, he must have earned $700 per week. But since there is no information that tells you how the salary was distributed across the first 4 weeks, all you can say for certain is

. Hence, none of the answers given are any more or less correct than any of the others.

John

My calculator said it, I believe it, that settles it

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