Please help?

Question

Rachel, Jose, and Frank served a total of 88 orders Monday at the school cafeteria. Jose served 8 more orders than Rachel. Frank served 4 times as many orders as Jose.

Answer 1

R+J+F=88

J=R+8

F=4J

 

Substitute what you can

 

R+R+8+4(R+8)=88

2R+8+4R+32=88

6R+40=88

6R=48

R=8

 

Plug in 8 for R

 

J=8+8

J=16

 

Plug in 16 for J and 8 for R

 

16+8+F=88

24+F=88

F=64

 

So Rachel served 8, Jose served 16, and Frank served 64