Exams › SSC CGL (Prelims) › General

Three numbers are such that when the sum of any two of them is added to one-fourth of the third, the results are 156, 148, and 140 respectively. What is the average of the three numbers?

1. 56.88
2. 60
3. 65.77
4. 68

Correct answer: 65.77

Solution

Let the numbers be x, y, z. The conditions give three linear equations whose sum yields the total of the three numbers. Once the sum is found, divide by 3 to get the average.

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