II 25 14. 8: 11 = 6 : 10 15. 12 : 15 = 4 : 5 a IV. DIRECTION: Answer the following problem. Show your solution (2 pts each problem) 1. The ratio of boys to girls in a class is 4 to 5. How many pupils are there in a class if there are 24 boys? 2. The ratio of teacher advisers to pupils in a club is 1 to 15. How many pupils are there if there are 5 teachers? 3. A study ahows that 1 out of 3 american adults have one or more types of cardiovascular disease. If 24 000 american adults participated in the study, about how many have cardiovascular disease? 4. A man can burn approximately 300 calories by walking up and down the stairs for about 30 minutes. How long will it take him to burn 900 calories? 5. You can buy a iviathematics book for Php400.00. How many can you buy for Php 1200?
