Daily Practice · Higher

Daily Practice - Higher

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

14th August 1998

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

1
Conditional Probability3 marks
26 students study Spanish and 8 of those also study Art. One Spanish student is picked at random. Work out the probability they study Art.
2
Capture Recapture2 marks
A capture-recapture estimate is made of the ladybird population of a garden. State one assumption the method relies on.
3
Reverse Percentages3 marks
A bill is £120 including VAT at 20%. Work out the amount before VAT.
4
Quadratic Formula3 marks
Use the quadratic formula to solve x^2 - 8x - 8 = 0, to 2 decimal places.
5
Direct and Inverse Proportion3 marks
y is directly proportional to x. When x = 8, y = 72. Work out y when x = 9.

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