1. If x people working together make a total of y dollars after an hour of work. how much money will z people make if they work 4 hours at the same rate per person ?

Question

2.Each of the n members of an organization may invite up to 3 guests to a conference. What is the maximum number of members and guests who might attend the conference?

A. n + 3
B. 3n
C. 3n + 4
D. 4n
E. 4n + 4

Answer 1

they each make (y/x) dollars per hour
so
4 (y/x)(z) = 4 y z/x

4 n