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Q. The average age of a class is 15.8 year. The average age of the boys in the class is 16.4 year and that of the girls is 15.4 year. What is the ratio of boys to girls in the class?
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Q. The ratio of the radii of two circles is 1 : 3. Then the ratio of their areas is
Q. Which of the following fractions is greater than 3 /4 and less than 5 / 6 ?
Q. The ratio of two numbers is 7 : 4 and their sum is 440. The smaller of the two numbers is ____ .
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