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I need to find the value of the soccer ball provide an answer and explanation!

 

 Apr 20, 2020
 #1
avatar+29956 
+1

Let b = baseball, k = basketball, t = tennis ball, s = soccer ball.

 

Then you have the following four equations:

 

b + k = 240              (1)

t + s = 500               (2)

s - k + t = 455          (3)

b + t = 215               (4)

 

From (1) we have  k = 240 - b.  Put this into (3):

s - 240 + b + t = 455  Rewrite as:

s + t + b = 695        (5)

 

Use (2) in (5) to get  500 + b = 695   so that  b = 195

 

Use b in (4) to get  195 + t = 215    so t = 20

 

Use t in (2) to get   20 + s = 500  so s = 480

 

The socer ball is worth 480.

 Apr 20, 2020
 #2
avatar+23526 
+2

Add top eq to third equation to get

S + base + tennis = 695

 

Multiply last equation by -1 and add to this equation to get

 

S = 480

 Apr 20, 2020

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