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Jake isn't doing well in history.  He made a 67 on his first test. His second test was even worse; he scored a 52. What does Jake need to score on the next test to have a test average of 70?

 

thanks for any help!
⚡️

 Jun 9, 2021
 #1
avatar+21 
0

70*3=210

67+52=119

210-119=91

he needs a 91 on his next test

 Jun 9, 2021
 #2
avatar+1432 
+1

67 + 52 + x = 210

 

x = 91

 Jun 9, 2021
 #3
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Thanks both of u!

 

⚡️

 Jun 9, 2021
edited by Guest  Jun 9, 2021
 #4
avatar+713 
0

$\frac{67 + 52 + x}{3} = 70$

$119 + x = 210$

$x = 210 - 119$

$\boxed{x = 91}$


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