Ratio & Proportion (Railway Maths) (Part – VII)

Total Questions: 50

31. The salaries of Hameed, Salman and Ganesh are in the ratio 7 : 11 : 9. If Ganesh gets ₹ 852 more than Hameed, then what is Salman’s salary (in Rupees)? [RPF S.I. 06/01/2019 (Afternoon) ]

Correct Answer: (a) 1,065
Solution:

32. Amir distributed 775 gifts among 4 children. The share of the first child is twice that of the second child, thrice that of the third child and four times that of the fourth child. Find the total number of gifts received by the first and second child. [RPF S.I. 10/01/2019 (Morning) ]

Correct Answer: (a) 558
Solution:

33. In one box, three different types of old coins are in the ratio of 3: 5: 7, the value of old coins is 1 rupees, 5 rupees, and 10 rupees respectively. If the total value of old coins in the box is Rs 294, then tell the number of old coins of Rs 10. [RPF S.I. 10/01/2019 (Morning) ]

Correct Answer: (c) 21
Solution:

34. There are saplings of 361 Mango tree and Neem tree in a garden. The ratio of the number of Mango tree to that of Neem tree saplings is 8 : 11. Then how many Neem tree saplings are in the garden? [RRB ALP 09/08/2018 (Afternoon)]

Correct Answer: (b) 209
Solution:

35. The ratio of sand to gravel in a mixture is 17 : 8, while that between gravel and cement is 6 : 17. What is the ratio of sand to cement in the mixture? [RRB ALP 09/08/2018 (Evening)]

Correct Answer: (a) 3 : 4
Solution:

Ratio of sand and cement in the mixture
= 17 × 6 / 8 × 17 = 3/4

36. In an alloy of German silver the ratio of copper to zinc was 17 : 7 while that of nickel to zinc was 4 : 3. The ratio of copper to zinc to nickel in the alloy was: [RRB ALP 10/08/2018 (Afternoon) ]

Correct Answer: (a) 51: 21: 28
Solution:

37. The ratio of the heights of Nani and Leelu is 4 : 3. If Leelu is 1.2 m tall, then what is the height of Nani ? [RRB ALP 10/08/2018 (Evening) ]

Correct Answer: (c) 1.6 m
Solution:

38. Vishnu spends ₹ 5000 in buying 12 tables and some chairs. The cost of one table is ₹ 50 and that of one chair is 40. What is the ratio of the numbers of the chairs to the number of tables purchased ? [RRB ALP 13/08/2018 (Morning) ]

Correct Answer: (d) 55 : 6
Solution:

39. In a bag containing red, green and pink tokens, the ratio of red to green tokens was 5 : 12 while the ratio of pink to red tokens was 7 : 15. What was the ratio of green to pink tokens? [RRB ALP 13/08/2018 (Morning)]

Correct Answer: (a) 36 : 7
Solution:

Balancing the given ratio we have :
Red : Green = 5 : 12 × 3 = 15 : 36
Red : Pink = 15 : 7
So, the ratio of Red, Green and Pink token = 15 : 36 : 7
Required ratio = 36 : 7

40. The initial ratio of sugar to flour in a dough was 2 : 7. To 9 kg of the dough, John added more sugar to make the sugar to flour ratio 2 : 5. How much sugar did John later add? [RRB ALP 13/08/2018 (Afternoon)]

Correct Answer: (c) 800 g
Solution: