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  • Question
  • If a/b = 1/3, then (3a + 2b) / (3a - 2b) is equal to?


  • Options
  • A. 3
  • B. -3
  • C. -5
  • D. -1

  • Correct Answer
  • -3 

    Explanation

    Given expression = (3a + 2b) / (3a - 2b)
    = [3(a/b) + 2] / [3(a/b) - 2]
    = [3 x 1/3 + 2] / [3 x 1/3 - 2]
    = 3 / -1
    =-3


  • More questions

    • 1. 
      The length of each side of an equilateral triangle having an area of 4?3 cm 2 is?

    • Options
    • A. 4/?3 cm
    • B. ?3/4 cm
    • C. 3 cm
    • D. 4 cm
    • Discuss
    • 2. 
      A sum becomes two fold in 6 yr at a certain rate of interest. Find the time, in which the same mount will be 10 fold at the same rate of interest.

    • Options
    • A. 35 yr
    • B. 49 yr
    • C. 59 yr
    • D. 54 yr
    • Discuss
    • 3. 
      For a certain sum, the simple interest in 2 yr at 8% per annum is ? 110 more than the simple interest in 1 yr at the ratio of 5% per annum for the same sum. Find the sum.

    • Options
    • A. ? 5000
    • B. ? 1000
    • C. ? 1050
    • D. ? 950
    • Discuss
    • 4. 
      The positive number, when increased by 10 equals 200 times its reciprocal. What is the number?

    • Options
    • A. 100
    • B. 10
    • C. 20
    • D. 200
    • Discuss
    • 5. 
      In a certain time, a sum becomes 4 times at the rate of 5% per annum. At what rate of simple interest, the same sum becomes 8 times in the same duration?

    • Options
    • A. 122/3 %
    • B. 113/5 %
    • C. 112/3 %
    • D. 123/5 %
    • Discuss
    • 6. 
      Kriya deposits an amount of ? 65800 to obtain a simple interest at the rate of 14% per annum for 4 yr. What total amount will Kriya get at the end of 4 yr?

    • Options
    • A. ? 102648
    • B. ? 115246
    • C. ? 125578
    • D. ? 110324
    • Discuss
    • 7. 
      The cost of 5 pens and 8 pencils is ?31.What would be the cost of 15 pens and 24 pencils?

    • Options
    • A. ?93
    • B. ?99
    • C. ?96
    • D. Cannot be determined
    • Discuss
    • 8. 
      Find the area of a triangle whose sides measure 8 cm, 10 cm and 12 cm.

    • Options
    • A. 8?63 sq cm
    • B. 5?63 sq cm
    • C. 6?53 sq cm
    • D. 7?93 sq cm
    • Discuss
    • 9. 
      Two equal sums of money were lent at simple interest at 10% per annum for 4 yr and 5 yr, respectively. If the difference in interest for two period was ? 220, then each sum is?

    • Options
    • A. ? 880
    • B. ? 1100
    • C. ? 2200
    • D. ? 1640
    • Discuss
    • 10. 
      If the three-four of a number is subtracted from the number, the value so obtained is 163.What is the number?

    • Options
    • A. 625
    • B. 562
    • C. 632
    • D. 652
    • Discuss


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