2:3 is the total strength of the class (girls and boys respectively). find the strength of the class
a 12
b 15
c 16
d 18
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1
12 is wrte
but not sure
but not sure
angelin2:
i'm afraid that its not correct
multiply 2/3 by 3 in numerator and denominator and you'll get 6/9 and add the parts 6+9 =15
thanks
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