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18 Aug 2023, 00:17
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hemilshihora
If you read the solutions above carefully, you'll see that from (1) we can find the the week's sales amount (S) and subsequently calculate the income. So, (1) is sufficient as well.
18 Aug 2023, 01:39
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hemilshihora
But the equation gives you the exact numerical value of S. Check Bunuel's solution above. It is an equation in one variable which, upon solving gives you the exact value of the total amount paid to the salesman. Even if we have to go through multiple steps for it, as long as we get a unique answer, the data in statement 1 is sufficient alone.
30 Dec 2025, 22:50
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Gave D as answer but I was thinking how beautifully is this question set. Nevertheless , I would have not gone so much into detail during exam but I did it in home. I saw that this could have been trap if there was another value in case sales was below or equal to $1000. Actually we don't know the case for sales <=$1000. So I made equation such that total sales was coming as (30000/(10-y)) where y is dynamic commission %. Now we know for >$1000. But we don't know for <=$1000. But we also see that for <=$1000 , y will always be negative which is not possible. y should be always greater or equal to 0. Fortunate if anyone has not taken care for this they also got same answer. But it could have been more difficult if such case was possible. In fact y cannot be negative because it is said that $300 is fixed remuneration which was given.
