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Quantitative: Ratios and Proportions Flashcards

7 cards from real GMAT practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Quantitative: Ratios and Proportions flashcards as text

  1. A sum of $480 is divided in ratio 3:5. What is the smaller share?

    Answer: $180

    Total parts = 8, each = 60, smaller share = 3 x 60 = $180.

  2. If 8 pens cost $20, how much do 14 pens cost at the same rate?

    Answer: $35

    Each pen = $2.50, so 14 x 2.50 = $35.

  3. The ratio of boys to girls is 4:5. If there are 12 more girls than boys, how many boys are there?

    Answer: 48

    Difference = 1 part = 12, so boys = 4 x 12 = 48.

  4. If z is inversely proportional to x and z = 6 when x = 4, what is z when x = 8?

    Answer: 3

    Product zx = 24 stays constant, so z = 24/8 = 3.

  5. A 60-liter mixture has acid and water in ratio 2:3. How much acid is present?

    Answer: 24 liters

    Total parts = 5, each = 12, acid = 2 x 12 = 24 liters.

  6. If a:b = 7:3, and b is increased by 6 to make a:b = 7:5, what was the original value of a?

    Answer: 21

    b goes from 3k to 5k as +6, so 2k=6, k=3, and a = 7 x 3 = 21.

  7. Three friends invest in ratio 4:5:6. If the total profit is $1,500, what does the second friend get?

    Answer: $500

    Total parts = 15, each = 100, second = 5 x 100 = $500.