Selina Concise Mathematics Class 10 ICSE Solutions Chapter 7 - Ratio and Proportion (Including Properties and Uses)
Selina Concise Mathematics Class 10 ICSE Solutions Ratio and Proportion (Including Properties and Uses) Selina Publishers Concise Mathematics Class 10 ICSE Solutions Chapter 7 Ratio and Proportion (Including Properties and Uses) Ratio and Proportion Exercise 7A – Selina Concise Mathematics Class 10 ICSE Solutions Question 1. Solution: Question 2. If x: y = 4: 7, find the value of (3x + 2y): (5x + y). Solution: Question 3. Solution: Question 4. If (a – b): (a + b) = 1: 11, find the ratio (5a + 4b + 15): (5a – 4b + 3). Solution: Question 5. Solution: Question 6. Solution: Question 7. Solution: Question 8. Solution: Question 9. Solution: Question 10. A school has 630 students. The ratio of the number of boys to the number of girls is 3 : 2. This ratio changes to 7 : 5 after the admission of 90 new students. Find the number of newly admitted boys. Solution: Question 11. What quantity must be subtracted...