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Question : The average of T1 and T2 is 15. The average of T3 and T4 is 35. What is the average of T1, T2, T3, and T4?

Option 1: 24

Option 2: 30

Option 3: 28

Option 4: 25


Team Careers360 10th Jan, 2024
Answer (1)
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Team Careers360 18th Jan, 2024

Correct Answer: 25


Solution : Given that the average of T1 and T2 is 15, the sum of T1 and T2 is 15 × 2 = 30
Similarly, given that the average of T3 and T4 is 35, the sum of T3 and T4 is 35 × 2 = 70
So, the sum of T1, T2, T3, and T4 is 30 + 70 = 100
Since there are 4 numbers, the average of these 4 numbers is $\frac{100}{4}$ = 25
Hence, the correct answer is 25.

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