Daily Practice

Higher

14th September 1984

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

1
Probability Trees3 marks
2 of 8 bulbs in a box are faulty. Two are taken with replacement. Work out the probability at least one is faulty.
2
Capture Recapture2 marks
A capture-recapture estimate is made of the fish population of a pond. State one assumption the method relies on.
3
Reverse Percentages3 marks
A bill is £816 including VAT at 20%. Work out the amount before VAT.
4
Simultaneous Equations3 marks
3 teas and 3 cakes cost £13.95. 3 teas and 5 cakes cost £18.65. Find the price of a tea.
5
Direct and Inverse Proportion3 marks
y is directly proportional to x. When x = 2, y = 20. Work out y when x = 9.

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