Appreciation and depreciation, reverse percentages, fractions, vectors, quartiles, standard deviation and the line of best fit. Test your knowledge with…
10 questions • Zestly
• A house is valued at 180 000 pounds and appreciates by 5 per cent each year. What is its value after 2 years?
• A car is worth 12 000 pounds and depreciates by 15 per cent each year. What is its value after 3 years?
• After a price rise of 20 per cent, a jacket costs 96 pounds. What was the price before the rise?
• Work out $2 \frac{3}{4} \div 1 \frac{1}{2}$. Give your answer as a mixed number.
• Given the vectors $u = (3, -2)$ and $v = (-1, 5)$, what is $u + v$?
• What is the magnitude of the vector $w = (6, -8)$?
• Find the interquartile range of the data set: 3, 5, 7, 8, 9, 12, 15, 18, 21.
• Two classes sat the same test. Both had a mean mark of 62, but class A had a much larger standard deviation than class B. What does this…
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