Correct Answer - Option 2 : 29 : 14
Formula used:
Average = Sum of all the terms/Total number of terms
Calculation:
Sum of all oil imports from Iraq in all the years = 15.8 + 14.4 + 15 + 17.2 + 24.6 = 87
Average of all oil imports from Iraq in all the years = 87/5 = 17.4
Sum of all oil imports from Venezuela in all the years = 7.2 + 7.6 + 7.3 + 10.3 + 9.6 = 42
Average of all oil imports from Venezuela in all the years = 42/5 = 8.4
Ratio = 17.4/8.4 = 29/14
∴ The required ratio is 29 ∶ 14