Ang Shi En Ian's answer to -'s Primary 5 Maths Rate & Ratio Singapore question.

done {{ upvoteCount }} Upvotes
clear {{ downvoteCount * -1 }} Downvotes
Ang Shi En Ian
Ang Shi En Ian's answer
3 answers (Tutor Details)
1st
Assign X and Y to represent Ryan and Sharon's marbles at the start. Then follow the question on who gives how many marbles to whom.

Create the equation, then cancel out the variables