Question: Directions: Study the following graph carefully to answer the given questions. [SBI (PO) 2014]
Number of Students Playing Carrom, Cricket and Hockey from Different Schools
If the number of students playing each game in school S is increased by 15% and the number of students playing each game in school Q is decreased by 5%, what will be the difference between the number of students in school S and Q?
Options:
A) 54
B) 218
C) 366
D) 224
E) 206
Show Answer
Answer:
Correct Answer: E
Solution:
- Total number, of students playing hockey in school
$ S=160 $
Total number of students playing cricket in school
$ S=320 $
Total number of students playing carrom in school
$ S=260 $
Similarly, for school Q playing hockey $ =260 $
Playing cricket $ =180 $
Playing carrom $ =240 $
$ \therefore $ Required difference
$ =( \frac{260\times 115}{100}+\frac{320\times 115}{100}+\frac{160\times 115}{100} ) $
$ -( \frac{240\times 95}{100}+\frac{180\times 95}{100}+\frac{260\times 95}{100} ) $
$ =(2.60\times 115+3.20\times 115+1.60\times 115) $
$ -(2.40\times 95+1.80\times 95+2.60\times 95) $
$ =(299+368+184)-(228+171+247) $
$ =851-646=205 $
BETA
