单项选择题

The daily rate for a hotel room that sleeps4 people is$39 for one person and x dollars for each additional person．If 3people take the room for one day and each pays $21 for the room，what is the value of x？（）

A. 6
B. 8
C. 12
D. 13
E. 24

<上一题 目录 下一题>
热门 试题

单项选择题
If the cost of a long—distance phone call is c cents for the first minute and cents for each additional minute，what is the cost，in cents．of a 10-minute call of this type？（）

A.A
B.B
C.C
D.D
E.E
单项选择题
A school bus has 10 double seats in each of2 rows．Two students can sit in each double seat．If an empty bus starts out and makes two stops，picking up three times the number of students at the second stop as at the first stop，and if the bus is then filled to seating capacity，how many students got on the bus at the second stop？（）

A. 5
B. 10
C. 15
D. 20
E. 30
相关试题