Problem-Solving and Data AnalysisHardPaint for two coats on a wall
Problem-Solving and Data Analysis practice question
A wall is 6 metres wide and 2.5 metres high. One litre of paint covers 12 square metres. How many litres are needed to give the wall two coats?
Answer: 2.5 or 5/2
The wall is 15 m²; two coats cover 30 m²; 30 ÷ 12 = 2.5 litres.
Common wrong answers
- If you answered 30
- 30 is the area to be covered, in square metres.
- If you answered 1.25
- 1.25 is enough for one coat.
- If you answered 0.8
- 0.8 divides 12 by 15.
More Problem-Solving and Data Analysis questions
- Hard
The mean of five numbers is 12. If four of them are 8, 10, 14, and 16, what is the fifth number? - Hard
In a survey of 50 people, 30 like coffee, 20 like tea, and 8 like both. How many like neither? - Hard
A car travels at 60 mph for 2 hours, then 40 mph for 3 hours. What is its average speed for the whole trip? - Hard
Which statement correctly compares the standard deviations of the two sets? - Hard
Which statement best interprets the slope of the line of best fit? - Hard
How many milliliters of the 40% acid solution must the chemist add?
Not affiliated with the College Board. SAT is a trademark of the College Board.