Higher
17th April 1978
- 1Repeated Percentage Change3 marks
A price rises by 25% and then falls by 25%. Work out the overall percentage change, to 2 decimal places.
- 2Similar Shapes (Area and Volume)3 marks
Two similar shapes have lengths in the ratio 1 : 4. The smaller has an area of 12 cm^2. Work out the area of the larger.
- 3Conditional Probability3 marks
13 students study Spanish and 8 of those also study Art. One Spanish student is picked at random. Work out the probability they study Art.
- 4Cumulative Frequency2 marks
A cumulative frequency graph is drawn for 128 values. What cumulative frequency do you read across from to estimate the lower quartile?
- 5Standard Form3 marks
Work out (35 x 10^9) / (7 x 10^5). Give your answer in standard form.
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Any date always gives the same five questions, so a sheet can be set again or shared. All of April 1978, including the monthly compilation PDF.