Same pattern as Cookies — Box A and Box B swap. New numbers, new story. Try each one on paper, then check the working below — or watch it drawn out, the same way the problem above is.
Question 1
Maya and Liam had stickers in the ratio 7 : 5. After Maya gave 18 stickers to Liam, the ratio became 5 : 7. How many stickers did Maya have at first?
Work it out on paper, then check below. ▶ See the working
Question 2
Container P and Container Q held marbles in the ratio 9 : 7. After 20 marbles were poured from Container P into Container Q, the ratio became 7 : 9. How many marbles were in Container P at first?
Work it out on paper, then check below. ▶ See the working
Question 3
Ken and Mei's piggy banks held money in the ratio 3 : 1. After Ken transferred $30 to Mei's piggy bank, the ratio became 1 : 3. How much money did Ken have at first?
Work it out on paper, then check below. ▶ See the working