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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?
5- Divide Rs. 1162 among A, B, C in the ratio 35 : 28 : 20?
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
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