These questions are based on following graphs. Classification of appeared candidates in a competitive test from different States and qualified candidates from those States.
What is the difference between the number of qualified candidates of States D and G?
Difference in % of qualified candidates from states D and G = 21 - 13 = 8 %
=> Difference between the number of qualified candidates of States D and G
= $$\frac{8}{100} \times 9000 = 8 \times 90$$
= $$720$$
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