Advanced Engineering Mathematics
Advanced Engineering Mathematics
10th Edition
ISBN: 9780470458365
Author: Erwin Kreyszig
Publisher: Wiley, John & Sons, Incorporated
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Question
Answer 13-20 NOTE: Round your answers to the hundredth decimal place or nearest cent.
12. Ramon has notes of $100, $50 and $10 respectively. The ratio of these notes is 2:3:5 and the total amount is $2,00,000, Find the numbers of notes of each kind. 13. Divide $430 into 3 parts such that A gets 5/4 of B and the ratio between B and C is 3:4. 14. The monthly incomes of two persons are in the ratio 4:5 and their monthly expenditures are in the ratio 7:9. If each saves $50 per month, find the monthly income of the second person. 15. A certain sum of money is divided among A, B, C in the ratio 2 :3:4. If A's share is $200, find the share of B and C. 16. Divide $940 among A, B, C in the ratio 1/3: 1/4 1/5 17. In a library the ratio of English books to Math books, is the same as the ratio of Math books to Science book. If there are 1200 books on English and 1800 books on Math, find the number of Science books. 18. The ratio of the prices of two houses was 16 : 23. Two years later when the price of the first has increased by 10% and that of the second by $477, the ratio of the prices becomes 11: 20. Find the original price of the first house. 19. The ratio of monthly income to the savings in a family is 5: 4 If the savings be $9000, find the income and the expenses. 20. The ratio of number of male and female teachers in a school is 3: 4. If there are 16 female teachers, find the number of male teachers.
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Transcribed Image Text:12. Ramon has notes of $100, $50 and $10 respectively. The ratio of these notes is 2:3:5 and the total amount is $2,00,000, Find the numbers of notes of each kind. 13. Divide $430 into 3 parts such that A gets 5/4 of B and the ratio between B and C is 3:4. 14. The monthly incomes of two persons are in the ratio 4:5 and their monthly expenditures are in the ratio 7:9. If each saves $50 per month, find the monthly income of the second person. 15. A certain sum of money is divided among A, B, C in the ratio 2 :3:4. If A's share is $200, find the share of B and C. 16. Divide $940 among A, B, C in the ratio 1/3: 1/4 1/5 17. In a library the ratio of English books to Math books, is the same as the ratio of Math books to Science book. If there are 1200 books on English and 1800 books on Math, find the number of Science books. 18. The ratio of the prices of two houses was 16 : 23. Two years later when the price of the first has increased by 10% and that of the second by $477, the ratio of the prices becomes 11: 20. Find the original price of the first house. 19. The ratio of monthly income to the savings in a family is 5: 4 If the savings be $9000, find the income and the expenses. 20. The ratio of number of male and female teachers in a school is 3: 4. If there are 16 female teachers, find the number of male teachers.
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