Important Questions of Ratio and Proportion Quantitative Aptitude | Zigya

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41.

In a school there were 1554 students and the ratio of the number of the boys and girls was 4 : 3. After a few days, 30 girls joined the school but a few boys left; as a result the ratio of the boys and girls became 7 : 6. The number of boys who left the school is

  • 76

  • 74

  • 84

  • 84

747 Views

42.

If (3x - 2y) : (2x + 3y) = 5  : 6, then one of the values of open parentheses fraction numerator cube root of straight x space plus space cube root of straight y over denominator cube root of straight x minus cube root of straight y end fraction close parentheses squared is

  • 1 fifth
  • 5

  • 25

  • 25

200 Views

43.

A and B have their monthly incomes in the ratio 8 : 5, while their monthly expenditures are in the ratio 5 : 3. If they have saved Rs. 12,000 and Rs 10,000 monthly respectively, then the difference in their monthly incomes is

  • Rs 52,000

  • Rs. 42,000

  • Rs. 44,000

  • Rs. 44,000

650 Views

44.

Rs. 2420 were divided among A, B and C so that A : B = 5 : 4 and B : C = 9 : 10 then C gets

  • Rs. 680

  • Rs. 800

  • Rs. 900

  • Rs. 900

615 Views

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45.

In a regiment the ratio between the number of officers to soldiers was 3 : 31 before battle. In a battle 6 officers and 22 soldiers were killed and the ratio became 1 : 13, the number of officers in the regiment before battle was

  • 31

  • 38

  • 21

  • 21

244 Views

46.

Among 132 examinees of a certain school, the ratio of successful to unsuccessful students is 9 : 2. Had 4 more students passed, then the ratio of successful would have been

  • 14 : 3

  • 14 : 5

  • 28 : 3

  • 28 : 3

235 Views

47.

The sum of three numbers is 540. The ratio of second to third is 9 : 13 and that of first to third is 2 : 7. The third number is

  • 273

  • 280

  • 250

  • 250

84 Views

48.

Three numbers are in the ratio 1 : 2 : 3 and the sum of their cubes is 4500. The smallest number is

  • 4

  • 5

  • 6

  • 6

74 Views

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49.

Two numbers are in the ratio 3 : 5. If 6 is added to both of them, the ratio becomes 2 : 3. The numbers are

  • 21 and 35

  • 30 and 50

  • 24 and 40

  • 24 and 40

50 Views

50.

The ratio of two positive numbers is 3 : 4. The sum of their squares is 400. What is the sum of the numbers?

  • 28

  • 22

  • 24

  • 24

118 Views

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