Question : The table given below shows the GDP of two countries in different five years.
$K_1$ = The value of the average GDP of country A in all 5 years. $K_2$ = The value of average GDP of country B in all 5 years. What is the value of ($K_1 + K_2$)?
Option 1: 316
Option 2: 290
Option 3: 308
Option 4: 178
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Correct Answer: 308
Solution : Sum of GDP of country A in all the 5 years = 175 + 200 + 150 + 75 + 50 = 650 Average of GDP of country A in all the 5 years, $K_1$ = $\frac{650}{5}$ = 130 Sum of GDP of country B in all the 5 years = 285 + 300 + 125 + 85 + 95 = 890 Average of GDP of country B in all the 5 years = $\frac{890}{5}$ = 178 $\therefore K_2$ = 178 So, ($K_1+ K_2$) = 130 + 178 = 308 Hence, the correct answer is 308.
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