Ratio and Proportion

If the ratio of boys to girls in a class is 3:4 and there are 21 boys, how many girls are there?

A recipe requires ingredients in the ratio 2:3:5 for flour, sugar, and butter respectively. If you use 200 grams of sugar, how much flour is needed?

A cricket team’s win to loss ratio is 5:3. If the team has played 40 matches in total, how many matches did they win?

In a Bollywood dance troupe, the ratio of male to female dancers is 7:9. If there are 32 female dancers, how many male dancers are there?

A mixture contains milk and water in the ratio 7:3. If the total mixture is 50 liters, how much milk is present?

Two numbers are in the ratio 4:5. If their sum is 72, what is the smaller number?

If 3 pens cost ₹45, what will be the cost of 7 pens?

A car travels 150 km in 3 hours. At the same speed, how long will it take to travel 350 km?