Daily Practice

Higher

29th January 1973

5 questions · 15 marks · Grades 6-7 · 61 question types in this band

1
Reverse Percentages3 marks
A bill is £168 including VAT at 20%. Work out the amount before VAT.
2
Quadratic Formula3 marks
Work out the discriminant of 2x^2 - x + 4 = 0 and say how many real solutions it has.
3
Repeated Percentage Change3 marks
A price rises by 25% and then falls by 15%. Work out the overall percentage change, to 2 decimal places.
4
Similar Shapes (Area and Volume)3 marks
Two similar shapes have lengths in the ratio 1 : 2. The smaller has an area of 15 cm^2. Work out the area of the larger.
5
Conditional Probability3 marks
26 students study Spanish and 7 of those also study Art. One Spanish student is picked at random. Work out the probability they study Art.

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