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DanielleElmas [232]
3 years ago
11

Plsss helpppp I’m stuck

Mathematics
2 answers:
vovangra [49]3 years ago
8 0
C=15
...................
vaieri [72.5K]3 years ago
6 0

Answer:

b = 2c:  Ben's age is twice Cindy's.  So Cindy is 15 years old

(a + b + c) / 3 = 28: Their average age is 28  This tells us nothing as we already have Anne, Ben and Cindy's ages.  It does however give us a quick way to check the answers:

\frac{a + b + c}{3} = 28\\\frac{39 + 30 + 15}{3} = 28\\\frac{84}{3} = 28

Correct, so we know values found are correct.

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