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There are some chocolate and strawberry candies in a container. 2/5 of the chocolate candies and 1/2 of the strawberry candies add up to 138 candies. 2/3 of the chocolates candies and 5/7 of the strawberry candies add up to 210 candies. How many chocolate candies are there?

 Sep 14, 2021
 #1
avatar+35058 
+1

System of equations

 

2/5 c + 1/2 s = 138    <==== solve this for   s= 2 (138 -2/5 c)  

2/3 c + 5/7 s = 210    < ==== sub in the red equation for s

  2/3 c + 5/7 (2(138-2/5 c) )  = 210        now solve for 'c'

 Sep 14, 2021
 #3
avatar+152 
0

Is the answer 

Whayousayy  Sep 14, 2021
 #2
avatar+152 
0

135 choco. candies

 Sep 14, 2021
 #4
avatar+35058 
+1

Appears so...... !

ElectricPavlov  Sep 14, 2021

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