In a bag there are blue sweets, red sweets and yellow sweets.
The number of blue sweets is four times the number of yellow sweets.
The number of red sweets is half the number of yellow sweets.
Find the percentage of sweets in the bag that are yellow.
Practise CIE IGCSE Maths Writing and Simplifying Ratio with exam-style questions for Core and Extended tier. 15 questions, matched to the CIE IGCSE Maths (0580) specification and written in Paper 1 and Paper 3 (Core) or Paper 2 and Paper 4 (Extended) style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.