Elitmus Exam Numerical Ability Ratio and Proportion

some quantity of rice is required for each member of a family of 15 members.on a particular day,due to the absence of some members of the family,the consumption of rice was reduced in the ratio 5:3.the no of members absent on that day was?

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Elitmus Other Question

tea worth rs126 per kg and rs 135 per kg are mixed with a third variety in the ratio of 1:1:2.if the mixture is worth rs 153 per kg,the price of the 3rd variety will be the ratio of no of boys and girls in a school was 5:3.some new boys and girls were admitted to the school in the ratio 5:7.at this the total no of students in the school became 1200,and the ratio of boys to girls changed to 7:5.the no of students in the school before new admissions were how much?