# Exercise

Direction To Solve Choose the correct option in questions related to Ration and Proportion
1- If a : b = 5 : 9 and b : c = 4: 7, find a : b : c?
• A.20:36:63  • B.20:63:36  • C.63:20:36  • D.36:63:20  • E.None of these  2- Find the fourth proportional to 4, 9, 12?
• A.24  • B.21  • C.27  • D.36  • E.None of these  3- If x : y = 3 : 4, find (4x + 5y) : (5x - 2y)?
• A.23/7  • B.32/7  • C.23/7  • D.21/6  • E.None of these  4- Divide Rs. 672 in the ratio 5 : 3?
• A.420 and 252  • B.410 and 246  • C.400 and 240  • D.440 and 264  • E.None of these  5- Divide Rs. 1162 among A, B, C in the ratio 35 : 28 : 20?
• A.480 , 382 and 300  • B.490, 280 and 382  • C.490 , 392 and 280  • D.392 , 490 and 280  • E.None of these  6- A bag contains 50 p, 25 p and 10 p coins in the ratio 5: 9: 4, amounting to Rs. 206. Find the number of coins of 25 paisa type?
• A.200  • B.360  • C.160  • D.320  • E.None of these  7- A mixture contains alcohol and water in the ratio 4 : 3. If 5 litres of water is added to the mixture, the ratio becomes 4: 5. Find the quantity of alcohol in the given mixture?
• A.10  • B.12  • C.15  • D.18  • E.None of these  1