0580/12 Feb/Mar 2021, Question 11: Mean, Median, Mode and Range
Cambridge IGCSE Mathematics 0580 · Paper 12 (Core) · Calculator · 3 marks
اقرأ هذا الحل مشروحاً بالعربي ←
The question, in short
Nine numbers have mean 17; seven sum to 132 and the remaining two differ by 5. Find those two numbers.
Summarised in our own words. Use the official paper for the exact wording and any diagrams.
Solution · 3 marks
- 1Total of nine numbers = 9 × 17 = 153
- 2Sum of other two = 153 − 132 = 21
- 3x + (x + 5) = 21 so 2x = 16, x = 8
- 4The two numbers are 8 and 13
Answer8, 13
Stuck on a step? Read the free lesson: Mean, Median, Mode and Range
Practise more mean, median, mode and range questions
Real 0580 past-paper questions, marked on your working like the exam, with a worked solution for every part.
Practise free on LemmaraMore past-paper questions on mean, median, mode and range
Also searched as: 0580/12/F/M/21 · 0580_m21_qp_12 · 0580 m21 12 · question 11.
Lemmara is an independent study tool, not affiliated with or endorsed by Cambridge International Education. The worked solutions are Lemmara’s own.