Daily Practice

Higher

14th May 1990

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

1
Repeated Percentage Change3 marks
A price rises by 15% and then falls by 20%. Work out the overall percentage change, to 2 decimal places.
2
Finding the Area of Any Triangle3 marks
A triangle has sides of 18 cm and 9 cm with an angle of 73° between them. Work out its area, to 1 decimal place.
3
Probability Trees3 marks
3 of 9 bulbs in a box are faulty. Two are taken with replacement. Work out the probability at least one is faulty.
4
Cumulative Frequency2 marks
A cumulative frequency graph is drawn for 40 values. What cumulative frequency do you read across from to estimate the lower quartile?
5
Reverse Percentages3 marks
A bill is £360 including VAT at 20%. Work out the amount before VAT.

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