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      Question

      A basket contains (x + 4) red apples, (x + 6) green

      apples, and (x + 8) yellow apples. The probability of drawing a yellow apple from the basket is (7/20). Find the number of green apples in the basket.
      A 45 Correct Answer Incorrect Answer
      B 40 Correct Answer Incorrect Answer
      C 34 Correct Answer Incorrect Answer
      D 56 Correct Answer Incorrect Answer
      E none of these Correct Answer Incorrect Answer

      Solution

      ATQ, (x + 8)/[(x + 4) + (x + 6) + (x + 8)] = 7/20 Simplify and solve for x: 20(x+8) = 7(3x + 18) 20x +160 = 21x+ 126 21x -20x = 160-126 x = 34 Therefore, number of orange balls in the bag = 34 + 6 = 40

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