Daily Practice

Higher

24th February 1986

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

1
Probability Trees3 marks
7 of 10 bulbs in a box are faulty. Two are taken with replacement. Work out the probability at least one is faulty.
2
Cumulative Frequency2 marks
A cumulative frequency graph is drawn for 188 values. What cumulative frequency do you read across from to estimate the lower quartile?
3
Reverse Percentages3 marks
A bill is £120 including VAT at 20%. Work out the amount before VAT.
4
Simultaneous Equations3 marks
5 teas and 4 cakes cost £18.65. 2 teas and 3 cakes cost £12.15. Find the price of a tea.
5
Repeated Percentage Change3 marks
A price rises by 10% and then falls by 20%. Work out the overall percentage change, to 2 decimal places.

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