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The average of $T_{1}$ and $T_{2}$ is 15. The average of $T_{3}$ and $T_{4}$ is 35. What is the average of $T_{1}, T_{2}, T_{3}$ and $T_{4}$ ? |
24 30 28 25 |
25 |
Sum of $T_{1}$ and $T_{2}$ = 2 × 15 = 30 Sum of $T_{3}$ and $T_{4}$ = 2 × 35 = 70 Average of $T_{1}, T_{2}, T_{3}$ and $T_{4}$ = \(\frac{100}{4}\) = 25 |
