An airplane has 50 seats. 49 of the seats are empty. What is the ratio of the number of empty seats to the total number of seats?Write your answer as two numbers separated by a colon (for example, 2:3).

An amusement park sold a total of 50 tickets. 47 of the tickets were child tickets, and the rest were adult tickets. What is the ratio of the number of child tickets to the total number of tickets?Write your answer as two numbers separated by a colon (for example, 2:3).

In a toy store, the ratio of toy cars to toy planes is 4:9. If the store has 50 more toy planes than toy cars, how many toy planes are there?

James went to the theatre to watch a concert with his family. The theatre had 1750 seats. There were 60% fewer $50-seats than $30-seats. 50% of the $30-seats and some $50-seats were sold. A total of $20 000 was collected. How many seats were unsold?

Of the 49 passengers on an airplane, 16 are men and the rest are women. What is the ratio of the number of male passengers to the total number of passengers?

Seats for Mathematics, Physics and Biology in a school are in the ratio 5:7:8. There is a proposal to increase seats by 40%, 50% and 75% respectively. What will be the ratio of increased seats?