Daily Practice - Higher
Grades 6-7 - Higher-tier method and manipulation.
15th December 2002
- 1Conditional Probability3 marks
15 students study Spanish and 7 of those also study Art. One Spanish student is picked at random. Work out the probability they study Art.
- 2Box Plots2 marks
A box plot has a minimum of 14 and a maximum of 28. Work out the range.
- 3Reverse Percentages3 marks
A bill is £768 including VAT at 20%. Work out the amount before VAT.
- 4Quadratic Formula3 marks
Use the quadratic formula to solve x^2 - 12x - 3 = 0, to 2 decimal places.
- 5Direct and Inverse Proportion3 marks
y is inversely proportional to x. When x = 6, y = 8. Work out y when x = 4.
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