Foundation Plus
6th October 1981
- 1Probability Trees3 marks
A bag holds 3 red and 4 blue counters. One is taken, replaced, then another is taken. Work out the probability both are red.
- 2Frequency Trees3 marks
130 people were surveyed. 70 were adults, of whom 25 said yes. 10 of the children said yes. How many said yes altogether?
- 3Prime Factors, HCF and LCM3 marks
Write 126 as a product of its prime factors, using index form.
- 4Simultaneous Equations3 marks
4 teas and 4 cakes cost £13.80. 2 teas and 3 cakes cost £8.65. Find the price of a tea.
- 5Compound Interest and Depreciation3 marks
£2700 is invested at 3% compound interest per year. Work out the value after 4 years, to the nearest penny.
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Any date always gives the same five questions, so a sheet can be set again or shared. All of October 1981, including the monthly compilation PDF.