Jim went to the bakery to buy donuts for his office mates. He chose a quantity of similar donuts, for which he was charged a total of $15. As the donuts were being boxed, Jim noticed that a few of them were slightly ragged-looking so he complained to the clerk. The clerk immediately apologized and then gave Jim 3 extra donuts for free to make up for the damaged goods. As Jim left the shop, he realized that due to the addition of the 3 free donuts, the effective price of the donuts was reduced by $2 per dozen. How many donuts did Jim receive in the end?
(A) 18
(B) 21
(C) 24
(D) 28
(E) 33
Jim went to the bakery to buy donuts for his office mates. H
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Hi alanforde800Maximus,
We're told that Jim bought a quantity of similar donuts, for which he was charged a total of $15. As the donuts were being boxed, Jim noticed that a few of them were slightly ragged-looking so he complained to the clerk, who apologized and then gave Jim 3 EXTRA donuts for free to make up for the damaged goods. As Jim left the shop, he realized that due to the addition of the 3 free donuts, the effective price of the donuts was reduced by $2 per dozen. We're asked for the total number of donuts Jim received in the end. This question can be solved Algebraically or by TESTing THE ANSWERS.
We know that a certain number of donuts were bought for $15, which would give us a certain price/dozen. After getting another 3 donuts for free, the price/dozen for all the donuts drops $2 EXACTLY. The fact that the difference is an integer is interesting - this makes me think that the original number of donuts (X) and the larger number of donuts (X+3) both "relate" nicely to the number 12. $2 is also relatively small compared to $15, so the correct answer will probably be one of the smaller answers.
Let's TEST Answer A first...
Answer A: 18 total donuts
Final number of donuts = 18 (this is a nice number - it's exactly 1.5 dozen donuts)
Initial number of donuts = 15 (this is also relatively nice - it's exactly 1.25 dozen donuts)
18 donuts for $15 = 1.5 dozen for $15 = $10 per dozen
15 donuts for $15 = 1 donut for $1 = $12 per dozen
The difference here is $2, which is a MATCH for what we were told.
Final Answer: A
GMAT assassins aren't born, they're made,
Rich
We're told that Jim bought a quantity of similar donuts, for which he was charged a total of $15. As the donuts were being boxed, Jim noticed that a few of them were slightly ragged-looking so he complained to the clerk, who apologized and then gave Jim 3 EXTRA donuts for free to make up for the damaged goods. As Jim left the shop, he realized that due to the addition of the 3 free donuts, the effective price of the donuts was reduced by $2 per dozen. We're asked for the total number of donuts Jim received in the end. This question can be solved Algebraically or by TESTing THE ANSWERS.
We know that a certain number of donuts were bought for $15, which would give us a certain price/dozen. After getting another 3 donuts for free, the price/dozen for all the donuts drops $2 EXACTLY. The fact that the difference is an integer is interesting - this makes me think that the original number of donuts (X) and the larger number of donuts (X+3) both "relate" nicely to the number 12. $2 is also relatively small compared to $15, so the correct answer will probably be one of the smaller answers.
Let's TEST Answer A first...
Answer A: 18 total donuts
Final number of donuts = 18 (this is a nice number - it's exactly 1.5 dozen donuts)
Initial number of donuts = 15 (this is also relatively nice - it's exactly 1.25 dozen donuts)
18 donuts for $15 = 1.5 dozen for $15 = $10 per dozen
15 donuts for $15 = 1 donut for $1 = $12 per dozen
The difference here is $2, which is a MATCH for what we were told.
Final Answer: A
GMAT assassins aren't born, they're made,
Rich