| \[\frac{7}{8}\]th of the girls and \[\frac{6}{11}\]th of the boys of a primary school participated in the annual sports. If the number of participating students is 259 out of which 125 are boys. What is the difference between number of boys and number of girls in the primary school? |
A) 63
B) 71
C) 76
D) 81
Correct Answer: C
Solution :
| Number of girls participating \[=259-125=134\] |
| \[\therefore \]Number of girls in primary school \[=\frac{134\times 8}{7}\approx 153\] |
| and number of boys in school \[=\frac{125\times 11}{6}\approx 229\] |
| \[\therefore \]Required difference \[=229-153=76\] |
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