| Directions : Refer to the pie-charts carefully and answer the given questions. [IBPS (SO) 2015] |
  |
| What is the average number of Samsung cellular phones sold by stores B, C and D? |
A) 796
B) 792
C) 780
D) 812
E) 784
Correct Answer: B
Solution :
| Number of cellular phones (both Nokia and Samsung) sold by stores, B, C and D |
| =(20%+15%+33%) of 6400 |
| \[=69\times 64=4416\] |
| Number of Nokia cellular phones sold by stores B, C and D |
| =(18%+20%+30%) of 3000 |
| = 68% of \[3000=68\times 30=2040\] |
| Number of Samsung cellular phones sold by stores B, C and D |
| \[=4416-2040=2376\] |
| \[\therefore \] Required average\[=\frac{2376}{3}=792\] |
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