Daily Practice - Higher
Grades 6-7 - Higher-tier method and manipulation.
16th April 2022
- 1Probability Trees3 marks
5 of 10 bulbs in a box are faulty. Two are taken with replacement. Work out the probability at least one is faulty.
- 2Box Plots2 marks
A box plot has minimum 8, lower quartile 13, median 18, upper quartile 22 and maximum 28. Work out the interquartile range.
- 3Reverse Percentages3 marks
A bill is £408 including VAT at 20%. Work out the amount before VAT.
- 4Simultaneous Equations3 marks
2 teas and 4 cakes cost £16.80. 2 teas and 2 cakes cost £10.50. Find the price of a tea.
- 5Direct and Inverse Proportion Depth3 marks
y is directly proportional to x^2. When x = 6, y = 72. Work out y when x = 3.
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