← All NBT Flashcard Decks

Quantitative Literacy Flashcards

7 cards from real NBT 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 Literacy flashcards as text
  1. Two investments: Investment X returns 6% per year on $4,000; Investment Y returns 9% per year on $2,500. Which yields more annual interest?

    Answer: Investment X at $240

    X: 4,000 × 0.06 = $240; Y: 2,500 × 0.09 = $225; Investment X yields more.

  2. A graph shows electricity use of 850 kWh in January. If the cost is $0.12 per kWh, what is the January electricity bill?

    Answer: $102

    Bill = 850 × $0.12 = $102.

  3. A box contains 5 red, 3 blue, and 2 green marbles. If one marble is drawn at random, what is the probability it is NOT red?

    Answer: 1/2

    Non-red marbles = 3 + 2 = 5; total = 10; probability = 5/10 = 1/2.

  4. Exchange rates: 1 USD = 18.5 ZAR and 1 USD = 0.93 EUR. How many ZAR equals 200 EUR (rounded to the nearest whole number)?

    Answer: 3,978 ZAR

    200 EUR ÷ 0.93 ≈ 215.05 USD; 215.05 × 18.5 ≈ 3,978 ZAR.

  5. A patient's weight decreased from 95 kg to 80.75 kg. By what percentage did the weight decrease?

    Answer: 15%

    Decrease = 14.25 kg; percentage = 14.25/95 × 100 = 15%.

  6. A stacked bar chart shows total sales of 500 units, with 60% sold online and the rest in-store. How many units were sold in-store?

    Answer: 200

    In-store = 40% of 500 = 0.40 × 500 = 200 units.

  7. A store offers a buy-2-get-1-free promotion on items priced at $15 each. What is the effective cost per item when buying 3?

    Answer: $10

    You pay for 2 items: 2 × $15 = $30 for 3 items; $30 ÷ 3 = $10 per item.