Higher
23rd January 1980
- 1Bounds2 marks
A mass is 67 kg, correct to the nearest whole number. Write down the lower bound.
- 2Simultaneous Equations3 marks
5 teas and 1 cake cost £13.55. 1 tea and 5 cakes cost £11.35. Find the price of a tea.
- 3Speed and Density2 marks
A block has volume 50 cm^3 and density 7.5 g/cm^3. Work out its mass.
- 4SOHCAHTOA (Trigonometry)3 marks
A right-angled triangle has a hypotenuse of 16 cm and an angle of 70°. Work out the side adjacent to that angle, to 1 decimal place.
- 5Probability Trees3 marks
7 of 9 bulbs in a box are faulty. Two are taken with replacement. Work out the probability at least one is faulty.
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Any date always gives the same five questions, so a sheet can be set again or shared. All of January 1980, including the monthly compilation PDF.