Foundation Plus
1st March 1980
- 1Ratio2 marks
Red and blue marbles are in the ratio 3 : 4. There are 45 red marbles. How many marbles are there altogether?
- 2Bearings2 marks
A walker sets off due east. Write this direction as a three-figure bearing.
- 3Venn Diagrams3 marks
In a Venn diagram, 6 are in A only, 4 in B only, 11 in both and 4 in neither. Work out the probability a random one is in both.
- 4Capture Recapture3 marks
45 fish are marked and released. Later 54 are caught, of which 9 are marked. Estimate the population.
- 5Recurring Decimals to Fractions3 marks
Write the recurring decimal 0.111... as a fraction in its simplest form.
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Any date always gives the same five questions, so a sheet can be set again or shared. All of March 1980, including the monthly compilation PDF.