Higher
8th March 1981
- 1Direct and Inverse Proportion3 marks
y is inversely proportional to x. When x = 7, y = 12. Work out y when x = 3.
- 2Similar Shapes (Area and Volume)3 marks
Two similar shapes have lengths in the ratio 1 : 5. The smaller has an area of 6 cm^2. Work out the area of the larger.
- 3Conditional Probability3 marks
24 students study Spanish and 6 of those also study Art. One Spanish student is picked at random. Work out the probability they study Art.
- 4Box Plots2 marks
A box plot has a minimum of 18 and a maximum of 43. Work out the range.
- 5Standard Form3 marks
Work out (28 x 10^6) / (4 x 10^5). Give your answer in standard form.
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Any date always gives the same five questions, so a sheet can be set again or shared. All of March 1981, including the monthly compilation PDF.