Back to Grade 7
Ratios with three parts
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Learn it For a ratio a : b : c, find the value of ONE part (total ÷ (a + b + c)), then multiply by each number in the ratio.
Example: Share $\$180$ in the ratio 2 : 3 : 4.
- Parts: $2 + 3 + 4 = 9$; one part $= 180 \div 9 = 20$.
- Shares: $2 \times 20 = 40$, $3 \times 20 = 60$, $4 \times 20 = 80$.
- Check: $40 + 60 + 80 = 180$ ✓.
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