Subject
Quantitative Aptitude
Topic
Average
The average of a and b is 40 and the sum of b and c is What is the value of a-c?
The average of a and b is 40 and the sum of b and c is What is the value of a-c?
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20Explanation
(a + b)/2 = 40 or, (a + b) = 80 .............................................. (1) and, b + c = 70 .................................. (2) (1) - (2), we get, a + b - b - c = 80 - 70 or, a - c = 10Related questions
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