| Directions: Refer to the pie-charts and answer the given questions. [RRB (Officer) Grade B 2015] |
| Distribution of total number of members |
| (both male and female) in 5 health clubs in 2008 |
| Total number = 4200 |
 |
| Distribution of total number of male members in 5 health clubs in 2008 |
| Total number = 2400 |
 |
| Number of male members in health clubs A and D increased by equal number from 2008 to 2009. If the respective ratio between number of male members in health club A and that in D is 2009 is 17: 11, then what is the number of male members in health club D in 2009? |
A) 308
B) 352
C) 874
D) 396
E) 330
Correct Answer: B
Solution :
| Number of male members in club A in 2008 |
| \[=2400\times \frac{20}{100}=480\] |
| Number of male members in club D in 2008 |
| \[=2400\times \frac{12}{100}=288\] |
| Let the increased number \[=x\] |
| \[\therefore \]\[\frac{480+x}{288+x}=\frac{17}{11}\]\[\Rightarrow \]\[5280+11x-4896+17x\] |
| \[\Rightarrow \]\[6x=5280-4896=384\]\[\Rightarrow \]\[x=64\] |
| \[\therefore \]Number of male members in club D in 2009 |
| \[=288+64=352\] |
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