Mathematics
Medium
Question
Five years ago the average of the ages of A and B was 40 years and now the average of the ages of B and C is 48 years. What will be the age of the B ten years hence?
A
55 years
B
56 years
C
58 years
D
Data inadequate
✓ Official correct answer
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A
55 years
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B
56 years
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C
58 years
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D
Data inadequate
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