Higher
6th April 1980
- 1Direct and Inverse Proportion3 marks
y is inversely proportional to x. When x = 2, y = 48. Work out y when x = 12.
- 2Similar Shapes (Area and Volume)3 marks
Two similar shapes have lengths in the ratio 1 : 4. The smaller has an area of 19 cm^2. Work out the area of the larger.
- 3Conditional Probability3 marks
14 students study Spanish and 5 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 8 and a maximum of 32. Work out the range.
- 5The Product Rule for Counting3 marks
A code is 3 letters (A to Z) followed by 2 digits (0 to 9), and repeats are allowed. How many codes are possible?
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