Ratio and Proportion Practice Question and Answer

Q: If (\(4a ^2\)-\(3b^2\)):(\(2a ^2\)+\(5b ^2\))=12:19, then a:b=___ 4734 3

  • 1
    2:3
    Correct
    Wrong
  • 2
    1:2
    Correct
    Wrong
  • 3
    3:2
    Correct
    Wrong
  • 4
    2:1
    Correct
    Wrong
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Answer : 3. "3:2"

Q: Milk and water are in 7:2 ratio in a mixture of 729 litres. How much water shall be mixed in it in order to change this ratio to 7:3? 10680 6

  • 1
    81
    Correct
    Wrong
  • 2
    72
    Correct
    Wrong
  • 3
    45
    Correct
    Wrong
  • 4
    56
    Correct
    Wrong
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Answer : 1. "81"

Q:

Sum and product of two numbers is 11 and 18 respectively. What will be the sum of their reciprocals? 

1052 0

  • 1
    $$ 2\over 11 $$
    Correct
    Wrong
  • 2
    $$ 11\over 2 $$
    Correct
    Wrong
  • 3
    $$ 18\over 11 $$
    Correct
    Wrong
  • 4
    $$ 11\over 18 $$
    Correct
    Wrong
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Answer : 4. " $$ 11\over 18 $$"

Q: The total number of students in a school is 1224. If the number of girls in the school is 600, what is the respective ratio of the total number of boys to the total number of girls in the school? 2456 1

  • 1
    26:25
    Correct
    Wrong
  • 2
    21:17
    Correct
    Wrong
  • 3
    18:13
    Correct
    Wrong
  • 4
    5:4
    Correct
    Wrong
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Answer : 1. "26:25"

Q: 30% of first number is 75% of the second number. What is the respective ratio of the first number to the second number? 6181 1

  • 1
    5:2
    Correct
    Wrong
  • 2
    5:3
    Correct
    Wrong
  • 3
    25:14
    Correct
    Wrong
  • 4
    15:16
    Correct
    Wrong
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Answer : 1. "5:2"

Q: 40% of the number is equal to three-fourth of another number. What is the ratio between first number and second number? 2003 0

  • 1
    15:16
    Correct
    Wrong
  • 2
    15:8
    Correct
    Wrong
  • 3
    9:15
    Correct
    Wrong
  • 4
    8:17
    Correct
    Wrong
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Answer : 2. "15:8"

Q: Rs. 180 is stored in a box in the form of 1 Rupee coins, 50 paisa coins and 25 paisa coins. Their ratio is 2:3:4. Find the no. of 50 paisa coins. 2484 2

  • 1
    60
    Correct
    Wrong
  • 2
    120
    Correct
    Wrong
  • 3
    150
    Correct
    Wrong
  • 4
    180
    Correct
    Wrong
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Answer : 2. "120"

Q:

The ratio between the third proportional of 12 and 30 and mean proportional of 9 and 25 is

886 0

  • 1
    2 : 1
    Correct
    Wrong
  • 2
    5 : 1
    Correct
    Wrong
  • 3
    7 : 15
    Correct
    Wrong
  • 4
    9 : 14
    Correct
    Wrong
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Answer : 2. "5 : 1"

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