Write if true or false. A. The cost of 16 pineapples is ₹432. So, the cost of 1 pineapple is ₹26. B. 15 bottles of juice cost ₹225. The cost of 1 bottle of juice is ₹15.

$$
24 = 24 \times 1
$$
$$
72 = 24 \times 3
$$
The GCD is 24.

$$
\frac{24}{24} : \frac{72}{24} = 1:3
$$
The simplest form is $\boxed{\text{1:3}}$.

$$
81 = 9 \times 9
$$
$$
153 = 9 \times 17
$$
The GCD is 9.

$$
\frac{81}{9} : \frac{153}{9} = 9:17
$$
The simplest form is $\boxed{\text{9:17}}$.

$$
132 = 33 \times 4
$$
$$
33 = 33 \times 1
$$
The GCD is 33.

$$
\frac{132}{33} : \frac{33}{33} = 4:1
$$
The simplest form is $\boxed{\text{4:1}}$.

$$
\frac{15}{45} = \frac{1}{3}
$$

$$
\frac{21}{63} = \frac{1}{3}
$$
Since $\frac{1}{3} = \frac{1}{3}$, the ratios are in proportion.  
The ratios are $\boxed{\text{in proportion}}$.

$$
\frac{14}{15}
$$
This ratio is already in simplest form.

$$
\frac{56}{60} = \frac{56 \div 4}{60 \div 4} = \frac{14}{15}
$$
Since $\frac{14}{15} = \frac{14}{15}$, the ratios are in proportion.  
The ratios are $\boxed{\text{in proportion}}$.

$$
\frac{50 \text{ L}}{250 \text{ L}} = \frac{50 \div 50}{250 \div 50} = \frac{1}{5}
$$
Since $\frac{200}{1} \neq \frac{1}{5}$, the ratios are not in proportion.  
The ratios are $\boxed{\text{not in proportion}}$.

$$
\frac{65}{35} = \frac{65 \div 5}{35 \div 5} = \frac{13}{7}
$$

$$
\frac{600}{300} = \frac{2}{1}
$$
Since $\frac{13}{7} \neq \frac{2}{1}$, the ratios are not in proportion.  
The ratios are $\boxed{\text{not in proportion}}$.

$$
7 \times 12 = 84
$$

$$
14 \times 6 = 84
$$
Since $84 = 84$, the ratios are in proportion.  
In proportion: $\boxed{7:14::6:12}$.

$$
5 \times 40 = 200
$$

$$
8 \times 25 = 200
$$
Since $200 = 200$, the ratios are in proportion.  
In proportion: $\boxed{5:8::25:40}$.

$$
9 \times 112 = 1008
$$

$$
12 \times 99 = 1188
$$
Since $1008 \neq 1188$, the ratios are not in proportion.  
The ratios are