Higher
24th August 1964
- 1Conditional Probability3 marks
16 students study Spanish and 7 of those also study Art. One Spanish student is picked at random. Work out the probability they study Art.
- 2Cumulative Frequency2 marks
A cumulative frequency graph is drawn for 120 values. What cumulative frequency do you read across from to estimate the lower quartile?
- 3Reverse Percentages3 marks
A bill is £264 including VAT at 20%. Work out the amount before VAT.
- 4Solving Quadratics3 marks
Solve x^2 + 4x - 45 = 0.
- 5Repeated Percentage Change3 marks
A price rises by 15% and then falls by 10%. Work out the overall percentage change, to 2 decimal places.
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Any date always gives the same five questions, so a sheet can be set again or shared. All of August 1964, including the monthly compilation PDF.