Daily Practice · Higher

Daily Practice - Higher

28th October 1994

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

1
Probability Trees3 marks
2 of 10 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 moth population of a meadow. State one assumption the method relies on.
3
Reverse Percentages3 marks
A bill is £504 including VAT at 20%. Work out the amount before VAT.
4
Simultaneous Equations3 marks
2 teas and 1 cake cost £6.40. 3 teas and 2 cakes cost £10.85. Find the price of a tea.
5
Direct and Inverse Proportion3 marks
y is directly proportional to x. When x = 4, y = 40. Work out y when x = 11.

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