Daily Practice · Higher

Daily Practice - Higher

Grades 6-7 - Higher-tier method and manipulation.

19th January 2002

5 questions · 14 marks · Grades 6-7 · 61 question types in this band

1
Probability Trees3 marks
5 of 8 bulbs in a box are faulty. Two are taken with replacement. Work out the probability at least one is faulty.
2
Box Plots2 marks
A box plot has minimum 7, lower quartile 13, median 15, upper quartile 25 and maximum 32. Work out the interquartile range.
3
Reverse Percentages3 marks
A bill is £264 including VAT at 20%. Work out the amount before VAT.
4
Simultaneous Equations3 marks
4 teas and 3 cakes cost £11.95. 4 teas and 2 cakes cost £10.50. Find the price of a tea.
5
Direct and Inverse Proportion Depth3 marks
y is directly proportional to x^2. When x = 3, y = 63. Work out y when x = 5.

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