作业帮 > 英语 > 作业

GMAT数学题When positive integer x is divided by 5,the remainder

来源:学生作业帮 编辑:作业帮 分类:英语作业 时间:2024/05/13 13:53:49
GMAT数学题
When positive integer x is divided by 5,the remainder is 3; and when x is divided by 7,the remainder is 4.When positive integer y is divided by 5,the remainder is 3; and when y is divided by 7,the remainder is 4.If x > y,which of the following must be a factor of x -
A.12
B.15
C.20
D.28
E.35
作差的话消去了余数,因为他们的余数是一样的,所以作差后的数是5的倍数也是7的倍数,只能是e了