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There are three fractions A, B and C. If A = 1/5 and B = 1/8 and the average of A, B and C is 1/10. What is the value of C?
  • a)
    –1/20
  • b)
    – 1/60
  • c)
    –1/30
  • d)
    – 1/40
Correct answer is option 'D'. Can you explain this answer?
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Most Upvoted Answer
There are three fractions A, B and C. If A = 1/5 and B = 1/8 and the a...
Let's calculate the average of A, B, and C using the given fractions:

Average = (A + B + C)/3

1/10 = (1/5 + 1/8 + C)/3

Multiplying both sides of the equation by 30 (the least common multiple of 5, 8, and 3) to eliminate the denominators:

30 * (1/10) = 30 * ((1/5) + (1/8) + C)/3

3 = 6 + 3.75 + 10C

3 = 9.75 + 10C

Rearranging the equation:

10C = 3 - 9.75

10C = -6.75

Dividing both sides of the equation by 10:

C = -6.75/10

C = -0.675

Therefore, the value of C is -0.675.
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There are three fractions A, B and C. If A = 1/5 and B = 1/8 and the a...
1/5 + 1/8 + C = 3 x 1/10 → C = –1/40.
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There are three fractions A, B and C. If A = 1/5 and B = 1/8 and the average of A, B and C is 1/10. What is the value of C?a)–1/20b)– 1/60c)–1/30d)– 1/40Correct answer is option 'D'. Can you explain this answer?
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