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Find the difference between the average temperature on Saturday and Tuesday together and the average temperature on Wednesday and Saturday together. (i) The average temperature on Saturday, Tuesday and Wednesday is 45 degrees. (ii) The sum of the temperatures on Tuesday and Wednesday is 115 degrees. (iii) The sum of the temperatures on Tuesday and Saturday is 80 degrees.
- 2.5
- 5.5
- 6.5
- 11.5
- 12.5
Correct answer: 5.5
Solution
From the three statements, we can determine the individual temperatures of Tuesday, Wednesday, and Saturday. Once those are found, the average of Saturday and Tuesday and the average of Wednesday and Saturday differ by half the difference between Wednesday and Tuesday, which comes out to 5.5.
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