Daily Practice · Higher

Daily Practice - Higher

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

10th December 2004

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

1
Probability Trees3 marks
3 of 5 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 snail population of a hedgerow. State one assumption the method relies on.
3
Reverse Percentages3 marks
A bill is £696 including VAT at 20%. Work out the amount before VAT.
4
Simultaneous Equations3 marks
5 teas and 3 cakes cost £12.40. 3 teas and 2 cakes cost £7.80. Find the price of a tea.
5
Direct and Inverse Proportion3 marks
y is directly proportional to x. When x = 5, y = 30. Work out y when x = 13.

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