GB-16-05-001 · Ratio and percentages
A club has juniors and seniors in the ratio 9 : 3. 80% of the juniors and 50% of the seniors cycle to the club. Work out the percentage of all members who cycle. Give your answer to 1 decimal place.
Ratio: Using Fractions / Percentages
Application of related method — Booklet p. 19
Method
1) Represent ratio parts as fractions of the total
2) Multiply each fraction by its percentage and sum
Worked Example (GB-16-05-001)
1)
Use weighted total 9 × 80 + 3 × 50.
2)
Divide by 12.
3)
72.5%
Ans =
72.5%