Foundation Plus
8th November 1981
- 1Simultaneous Equations3 marks
4 teas and 4 cakes cost £17.60. 4 teas and 2 cakes cost £11.30. Find the price of a tea.
- 2Writing a Ratio as a Fraction or Linear Function2 marks
x : y = 3 : 8. Write y in terms of x.
- 3Similar Shapes (Area and Volume)3 marks
Two similar shapes have lengths in the ratio 1 : 4. The smaller has an area of 16 cm^2. Work out the area of the larger.
- 4Probability (Higher)3 marks
A biased coin lands on heads with probability 0.25. It is thrown 100 times. How many heads would you expect?
- 5Frequency Trees3 marks
130 people were surveyed. 60 were adults, of whom 30 said yes. 5 of the children said yes. How many said yes altogether?
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