Ask Singapore Homework?
Upload a photo of a Singapore homework and someone will email you the solution for free.
Question
secondary 4 | E Maths
One Answer Below
Anyone can contribute an answer, even non-tutors.
Please explain to me how to do this :)
Hence, C has 1 unit of money more than A, and this unit is equivalent to $20.
Total sum of money = 20 x (2+3+4) = 180
See 1 Answer
so just find the difference between new A and old A, which will be $20