Multiple choice

A and B had some marbles. If A gives 1 to B, then both have equal number of marbles. If B gives 1 to A, then A has two more marbles as compared to B. Find the numbers of marbles with A and B, respectively.

  1. 9, 7

  2. 7, 6

  3. 6, 5

  4. 7, 5

  5. None of these
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Let the number of marbles with A and B be x and y, respectively. x - 1 = y + 1 and x + 1 = 2(y - 1)

On solving, we get y = 5 and x = 7

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