1. 6:8 = 3:n
SOLUTION:
6:8 = 3:n
- Turn the two ratios into fractions.
[tex]\frac{6}{8} = \frac{3}{n}[/tex]
- Cross-multiply to find the missing value.
n = (8 × 3) ÷ 6
n = 24 ÷ 6
[tex]\boxed{n = 4}[/tex]
[Note: Just repeat the process above to find the missing value. ]
2. y:10 = 8:80
SOLUTION:
[tex]\frac{y}{10} = \frac{8}{80}[/tex]
y = (10 × 8) ÷ 80
y = 80 ÷ 80
[tex]\boxed{y = 1}[/tex]
3. 2:7 = x:35
SOLUTION:
[tex]\frac{2}{7} = \frac{x}{35}[/tex]
x = (35 × 2) ÷ 70
x = 70 ÷ 70
[tex]\boxed{x = 1}[/tex]
4. n:18 = 4:8
SOLUTION:
[tex]\frac{n}{18} = \frac{4}{8}[/tex]
n = (18 × 4) ÷ 8
n = 72 ÷ 8
[tex]\boxed{n = 9}[/tex]
5. 1:4 = x:28
SOLUTION:
[tex]\frac{1}{4} = \frac{x}{28}[/tex]
n = (28 × 1) ÷ 4
n = 28 ÷ 4
[tex]\boxed{x = 7}[/tex]
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