[問題]GWD-17 Q 3, 4

[hippo3333]

3
If X and y are nonzero integers, is 18 a factor of X^2Y?
(1) X is a multiple of 54
(2) Y is a multiple of 6
A:D

4
John makes wodden bowls and sells each bowl at a price that consists of his cost of making the bowl and a markup amount that is 25 percent of the selling price. What is the selling price of a bowl that cost John$60 to make?

A:80

覺得第三題A就可以回答了不管y是哪個整數都可以被18整除拜託一下了謝謝

[medi66]

GWD17-3 17-4 都已經討論過囉~

http://www.formosamba.com/phpBB3/viewtopi ... hlight=GWD

http://www.formosamba.com/phpBB3/viewtopi ... hlight=GWD

[hippo3333]

真是不好意思