Higher Plus
24th December 1955
- 1Bounds3 marks
A car covers 630 m (to the nearest 10 m) in 3 s (to the nearest second). Work out the lower bound of its speed, to 2 decimal places.
- 2Algebraic Fractions3 marks
Simplify (x^2 - 4x + 3)/(x - 1).
- 3Velocity Time Graphs2 marks
A train slows steadily from 24 m/s to rest in 5 seconds. Work out its deceleration.
- 4Finding the Area of Any Triangle3 marks
A triangle has sides of 8 cm and 11 cm and an area of 31.11 cm^2. Work out the acute angle between those two sides, to the nearest degree.
- 5Probability Equation Questions3 marks
A bag holds 12 counters, r of them red. Two are taken without replacement and P(both red) = 1/66. Work out r.
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Any date always gives the same five questions, so a sheet can be set again or shared. All of December 1955, including the monthly compilation PDF.