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Kenneth bought 15 chicken sandwiches and tuna sandwiches for $35.10. Each chicken sandwich costs $2.30 and each tuna sandwich costs $2.40. How many chicken sandwiches did Kenneth buy?

 May 25, 2021
 #1
avatar+311 
+2

assumed all r tuna

(15×$2.40-$35.10)÷($2.40-$2.30) = 9

 May 25, 2021
 #2
avatar+121054 
+1

Let  C  be  the  number of  chiken sandwiches

 

Then  15 - C  =  the  number  of tuna sandwiches

 

We  have

 

2.30C    +  2.40 (15 - C)    =   35.10          simplify

 

2.30C  +  36  - 2.40C   =  35.10

 

-10C  =  35.10  -  36

 

-.10C = - .90

 

C  = -.90  /-.10   =  9    chicken sandwiches

 

 

 

 

cool cool cool

 May 25, 2021

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