Here are the answers and walkthrough to Stupid Test Level 19 Question 13 – The average oF three numbers is 48. The average oF two oF these numbers is 56. What is the third number?
- Sum of the two numbers: 2*56 =112, sum of the three numbers: 3*48 =144. Thus, value of the 3 numbers:144-112 = 32.
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