Average world trade growth is how much per cent more or less than the average trade growth of china ...........

Quantitative Aptitude ( CCS) Radar Chart

Directions: The following radar graphs show the Trade Growth (in $ billion) of world and China from the previous year for the year 1977 to 1985.
Refer to the graphs to answer the questions that below:

Average world trade growth is how much per cent more or less than the average trade growth of china during the entire shown period?

More, 25%

Less, 30%

Less, 39%

More, 80%

Less, 25%

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Explanation:

Answer:3

We have, Average growth = Total growth/no. of years
Average World trade growth = (100 + 150 +175 + 175 + 150 + 200 + 225 + 250 + 275)/9
= 1700/9 =188.89 $billion
Average China trade growth = (100 + 200 + 250 + 275 + 275 +300 + 350 + 500 + 550)/9
= 2800/9 = 311.11 $billion
Thus, average world trade growth is less than that of China by (311.11 – 188.89) = 122.22 $billion
Required % = (122.22/311.11) × 100 = 39.28 ≈ 39% less