Higher
25th April 1981
- 1Direct and Inverse Proportion Depth3 marks
y is directly proportional to x^2. When x = 3, y = 27. Work out y when x = 4.
- 2Similar Shapes (Area and Volume)3 marks
Two similar shapes have lengths in the ratio 1 : 2. The smaller has an area of 19 cm^2. Work out the area of the larger.
- 3Conditional Probability3 marks
29 students study Spanish and 9 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 minimum 11, lower quartile 16, median 24, upper quartile 33 and maximum 40. Work out the interquartile range.
- 5Recurring Decimals to Fractions3 marks
Write the recurring decimal 0.1010... as a fraction in its simplest form.
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Any date always gives the same five questions, so a sheet can be set again or shared. All of April 1981, including the monthly compilation PDF.