Ratios & Proportions Level-2 Quiz-1

1. A local map has a scale of 1:22,500. The distance between two motorways is 1.8 km. How far are they apart on the map?

2. The diameters of two spherical balls are in the ratio 3 : 7. What is the ratio of their volumes?

3. In a packet of 2000 bolts, 100 are defective. Find the non-defective bolts as a ratio of the defective ones, in its simplest form

4. A certain concrete mixture is to be made up of 2 parts of cement, 3 parts sand, and 5 parts stone. What percent of sand in the concrete mixture?

5. If 16 birds lay 24 eggs in a month, how many eggs do 20 birds lay in a month?

6. If 3 workers can do 2 jobs in 5 days, how long will it take for 4 workers to do 6 jobs?

7. The ratio of x to y is 2:5. If 2x + 3y = 57, find y.

8. Two bags each contain some number of pencils and erasers. In the first bag, the ratio of pencils to erasers is 9:2. In the second bag, the ratio of pencils to erasers is 6:5. The contents of both bags are then dumped into an empty box. If the box contains 57 pencils and 31 erasers, how many total items were originally present in the second bag?

9. The ratio of c to d is 11 : 27. What is 4c : 5d ?

10. An alloy consists of 4 parts of tin and 6 parts of copper. How many grams of copper would be needed with 120 grams of tin to maintain the given ratio?