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In the following bar diagram the number of engineers employed in various companies has been given. Study the bar diagram carefully to answer the questions.
If the number of all the engineers in the company V, company X and company Y be increased by 30%, 35% and 40% respectively, what will be the overall percentage increase in the number of all engineers of all the companies taken together ?
Increase in the number of engineers in company :
V = $$\frac{130}{100}$$ * 400 = 520
X = $$\frac{135}{100}$$ * 700 = 945
Y = $$\frac{140}{100}$$ * 950 = 1330
Now, total no. of engineers after increment = 520 + 945 + 1330 + 650 + 750 = 4195
Total original no. of engineers = 400 + 650 + 700 + 950 + 750 = 3450
=> % increase = $$\frac{4195 - 3450}{3450}$$ * 100 = 22%
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