The number of students optically foot ball to the number of students opting cricket.

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Solution

Total no. of students $= 1800$
No. of students opted football $= 750$
No. of students opted cricket $= 800$
$\Rightarrow$ No. of students opted hockey $= 1800 - (750 + 800) = 1800 - 1550 = 250$
Now,
Ratio of number of students opted football to the number of students opted cricket $= \frac{750}{800} = \frac{50 \times 15}{50 \times 16} = \frac{15}{16}$

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The number of students optically foot ball to the number of students opting cricket.

Total no. of students =1800No. of students opted football =750No. of students opted cricket =800⇒ No. of students opted hockey =1800−(750+800)=1800−1550=250Now,Ratio of number of students opted football to the number of students opted cricket =750800=50×1550×16=1516