Higher
14th March 1989
- 1Writing a Ratio as a Fraction or Linear Function2 marks
x : y = 4 : 7. Write y in terms of x.
- 2Similar Shapes (Area and Volume)3 marks
Two similar shapes have lengths in the ratio 1 : 3. The smaller has an area of 23 cm^2. Work out the area of the larger.
- 3Conditional Probability3 marks
24 students study Spanish and 10 of those also study Art. One Spanish student is picked at random. Work out the probability they study Art.
- 4Capture Recapture3 marks
55 voles are marked and released. Later 64 are caught, of which 8 are marked. Estimate the population.
- 5The Product Rule for Counting2 marks
A meal deal has 7 mains, 4 sides and 6 drinks. How many different meals are possible?
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Any date always gives the same five questions, so a sheet can be set again or shared. All of March 1989, including the monthly compilation PDF.