A) 8 : 9
B) 17 : 18
C) 21 : 22
D) can't be determined
Correct Answer: C
Solution :
(c): Let nos be \[7x,8x\] After increase, Boys\[=7x\times 1.2=8.4x\] Girls = \[8x\times 1.1=8.8x\] New ratio = \[\frac{8.4x~}{8.8x}=\frac{21}{22}\].You need to login to perform this action.
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