SOLUTION: 1 plate of noodles cost $1.20 & 1 plate of rice cost $1.50 . I want to give treat to my 12 friends . 2 of my friends insist to have noodles. I want to spend not more than $16 on t

Algebra ->  Linear-equations -> SOLUTION: 1 plate of noodles cost $1.20 & 1 plate of rice cost $1.50 . I want to give treat to my 12 friends . 2 of my friends insist to have noodles. I want to spend not more than $16 on t      Log On


   

Question 814316: 1 plate of noodles cost $1.20 & 1 plate of rice cost $1.50 . I want to give treat to my 12 friends . 2 of my friends insist to have noodles. I want to spend not more than $16 on the treat. What is the maximum number of rice plates I can have for my friends?
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!

THIS ANALYSIS GIVES THE ANSWER-----------------------------------
Do we assume EXACTLY 2 of your friends will have noodles?
If all of your friends have the noodles, the CHEAPER ITEM, then 1.20%2A12=14.40 dollars.
Using r only, r being the number of rice plates,
1.2%2812-r%29%2B1.5%28r%29%3C=16
14.4-1.2r%2B1.5r%3C=16
0.3r%2B14.4%3C=16
0.3r%3C=16-14.4
0.3r%3C=1.6
r%3C=1.6%2F0.3
r%3C=5.3333333
This means, FIVE rice plates maximum.