P Q and R are three cities. The ratio of average temperature b/w P and Q is 11:12 and that b/w P and R is 9:8. The ratio b/w the average temperature of Q and R is?

Divide 1/18 in the ratio 2:1.

Compounded ratio = 4:9. Duplicate ratio = 3:4. The triplicate ratio of 2:3 and 9:7 is?

Divide 360 between Kunal and Mohit in the ratio 7:8.

Chalk contains 3% of carbon, 10% of calcium, and 12% of oxygen. Find the amount in grams of each of these substances in 1 kg of chalk.