Foundation Plus
1st August 1961
- 1Solving Equations3 marks
Solve 5(x - 9) = -20.
- 2Compound Interest and Depreciation3 marks
£5000 is invested at 5% compound interest per year. Work out the value after 5 years, to the nearest penny.
- 3Pythagoras2 marks
A right-angled triangle has a hypotenuse of 15 cm and one shorter side of 9 cm. Work out the other shorter side.
- 4Probability Trees3 marks
A bag holds 2 red and 4 blue counters. One is taken, replaced, then another is taken. Work out the probability both are red.
- 5Capture Recapture3 marks
45 beetles are marked and released. Later 45 are caught, of which 5 are marked. Estimate the population.
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Any date always gives the same five questions, so a sheet can be set again or shared. All of August 1961, including the monthly compilation PDF.