REET · Mathematics and Science (Level 2)
Ratio, proportion, partnership and direct/inverse variation.
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Q1 · Ratio and Proportion · EASY
The ratio of boys to girls in a school is 7:5. If there are 420 boys in the school, how many girls are there?
Q2 · Ratio and Proportion · MEDIUM
A, B and C enter into a partnership. A invests Rs 6000 for 4 months, B invests Rs 8000 for 3 months and C invests Rs 10000 for 5 months. If the total profit is Rs 7400, what is B's share in the profit?
Q3 · Ratio and Proportion · MEDIUM
If 15 men can complete a work in 20 days, in how many days will 10 men complete the same work, assuming all men work at the same rate?
Q4 · Ratio and Proportion · MEDIUM
The ratio of the ages of A and B is 5:7. After 6 years, their ages will be in the ratio 3:4. What is the present age of B?
Q5 · Ratio and Proportion · EASY
If the ratio of sugar to flour in a recipe is 2:5 and 10 kg of sugar is used, how much flour is needed?