General Mathematics Paper 2, WASSCE (PC), 2018

Question 2

Musa is three years older than Manya. Seven years ago, Musa was twice as old as Manya.

  1. How old are they now?
  2. When will the sum of them be 45? 

Observation

 

The Chief Examiner reported that only a few of the Candidates’ attempted this question very well. It was expected if Musa’s age = x and Manya’s age = y,

then

x = y + 3……….. (1) and (x – 7) = 2(y – 7)…… (2)

Solving both equations will yield Musa’s age = 13 years and Manya’s age = 10 years. While for part (b), let n be the year when the sum of their ages will be 45, so that

(10 + n) + (13 + n) = 45 and solving will give n = 11 years.