Little Macdonald
12/16/2023 · Elementary School
Write each of these ratios in its simplest form: \( \begin{array}{ll}\text { (a) } 3: 12=1: 4 & \text { (b) } 4: 30 \\ \text { (d) } 9: 21= & \text { (e) } 8: 64 \\ \text { (g) } 6: 22 & \text { (h) } 11: 99\end{array} \)
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Step-by-step Solution
To simplify each of the given ratios, we divide both parts of the ratio by their greatest common divisor (GCD).
(a) \( 3:12 \)
The GCD of 3 and 12 is 3.
\[
\frac{3}{3} : \frac{12}{3} = 1:4
\]
(b) \( 4:30 \)
The GCD of 4 and 30 is 2.
\[
\frac{4}{2} : \frac{30}{2} = 2:15
\]
(d) \( 9:21 \)
The GCD of 9 and 21 is 3.
\[
\frac{9}{3} : \frac{21}{3} = 3:7
\]
(e) \( 8:64 \)
The GCD of 8 and 64 is 8.
\[
\frac{8}{8} : \frac{64}{8} = 1:8
\]
(g) \( 6:22 \)
The GCD of 6 and 22 is 2.
\[
\frac{6}{2} : \frac{22}{2} = 3:11
\]
(h) \( 11:99 \)
The GCD of 11 and 99 is 11.
\[
\frac{11}{11} : \frac{99}{11} = 1:9
\]
In summary, the simplified forms of the ratios are:
- (a) \( 1:4 \)
- (b) \( 2:15 \)
- (d) \( 3:7 \)
- (e) \( 1:8 \)
- (g) \( 3:11 \)
- (h) \( 1:9 \)
Quick Answer
- (a) \( 1:4 \)
- (b) \( 2:15 \)
- (d) \( 3:7 \)
- (e) \( 1:8 \)
- (g) \( 3:11 \)
- (h) \( 1:9 \)
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