CA Foundation | Business Mathematics | Ratio | Exercise 1A | ICAI Study Material Solutions

CA Foundation Chapter - 1 Unit 1 : RATIO (Exercise 1A - ICAI Study material)

This video explains the solution of all the problems of Exercise 1A of Unit 1 Ratio (Chapter 1 in CA Foundation Maths study material book provided by ICAI).

Click the time stamp to jump to the required question's solution, or watch it all :-

00:00 Intro
00:06 Question 1 - The inverse ratio of 11 : 15 is ?
00:48 Question 2 - The ratio of two quantities is 3 : 4. If the antecedent is 15, the consequent is ?
01:49 Question 3 - The ratio of the quantities is 5 : 7. If the consequent of its inverse ratio is 5, the antecedent is ?
02:53 Question 4 - The ratio compounded of 2 : 3, 9 : 4, 5 : 6 and 8 : 10 is ?
04:18 Question 5 - The duplicate ratio of 3 : 4 is ?
05:03 Question 6 - The sub-duplicate ratio of 25 : 36 is ?
05:57 Question 7 - The triplicate ratio of 2 : 3 is ?
06:43 Question 8 - The sub-triplicate ratio of 8 : 27 is ?
07:38 Question 9 - The ratio compounded of 4 : 9 and the duplicate ratio of 3 : 4 is ?
08:34 Question 10 - The ratio compounded of 4 : 9, the duplicate ratio of 3 : 4, the triplicate ratio of 2 : 3 and 9 : 7 is ?
10:13 Question 11 - The ratio compounded of duplicate ratio of 4 : 5, triplicate ratio of 1 : 3, sub duplicate ratio of 81 : 256 and sub-triplicate ratio of 125 : 512 is ?
12:05 Question 12 - If a : b = 3 : 4, the value of (2a+3b) : (3a+4b) is ?
13:46 Question 13 - Two numbers are in the ratio 2 : 3. If 4 be subtracted from each, they are in the ratio 3 : 5. The numbers are ?
15:20 Question 14 - The angles of a triangle are in ratio 2 : 7 : 11. The angles are ?
17:39 Question 15 - Division of Rs. 324 between X and Y is in the ratio 11 : 7. X & Y would get Rupees ?
19:25 Question 16 - Anand earns Rs. 80 in 7 hours and Pramod Rs. 90 in 12 hours. The ratio of their earnings is ?
21:35 Question 17 - The ratio of two numbers is 7 : 10 and their difference is 105. The numbers are ?
23:15 Question 18 - P, Q and R are three cities. The ratio of average temperature between P and Q is 11 : 12 and that between P and R is 9 : 8. The ratio between the average temperature of Q and R is ?
25:15 Question 19 - If x : y = 3 : 4, the value of x^2y + xy^2 : x^3 + y^3 is ?
27:58 Question 20 - If p : q is the sub-duplicate ratio of p–x^2 : q–x^2 then x^2 is ?
31:13 Question 21 - If 2s : 3t is the duplicate ratio of 2s – p : 3t – p then ?
34:49 Question 22 - If p : q = 2 : 3 and x : y = 4 : 5, then the value of 5px + 3qy : 10px + 4qy is ?
38:09 Question 23 - The number which when subtracted from each of the terms of the ratio 19 : 31 reducing it to 1 : 4 is ?
39:48 Question 24 - Daily earnings of two persons are in the ratio 4:5 and their daily expenses are in the ratio 7 : 9. If each saves Rs. 50 per day, their daily earnings in Rs. are ?
41:43 Question 25 - The ratio between the speeds of two trains is 7 : 8. If the second train runs 400 kms. in 5 hours, the speed of the first train is ?
43:20 End Screen

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