아 미치겟네요...진짜 GRE 수학 쉽다더니 왜이렇게 어려운지...
우선 2문제 좀 풀어주세요 혹시 푸시면 해석은 한글로 부탁드려요 감사합니다 ㅠㅠ
A jeweler made a profit of $800 on the discounted price of a diamond that cost the jeweler $ 5,400 to purchase. the profit from the discounted price is 80% less than the profit the jeweler would have mad if he sold the diamond for its regular , undiscounted price.
Quantity A
The profit the jewler would have made from the regular , udiscount-ed price of the diamond expressed as a pecent-age of the price for whick the jeweler bought the diamond .
Quatity B
The difference between the profit on the dis-counted price and the profit on the regular , undiscounted price expressed as a percnt-age of the original price
1. Quantity A is greater
2.Quantity B is greater
3.The two quantities are equal
4. The relationship cannot be determined from the information given
정답은 우선 1 입니다. ㅠㅠ
2번째 문제
six children , three boys and three girls , sit in a row on a park benck. how many arrangements of childre are possible if no boy can sit on either end of the bench?
indicate all such values
1. 46,656
2.38,880
3.1,256
4.144
5. 38
정답은 4번 144 입니다아무리 고민해봐도 답이 안나오네요 ㅠㅠ