The ratio 1 1/2 capsicums : 1/2 onion in simplest form is 3/2 capsicums : 1 onion.
Step-by-step explanation
We need to find a common factor that can be used to simplify both terms of the ratio.
First, we can convert 1 1/2 to an improper fraction:
1 1/2 = 3/2
The ratio can be written as: 3/2 capsicums : 1/2 onion
To simplify this ratio, we can multiply both terms by the same factor that will make the denominators equal. The least common multiple of 2 and 1 is 2, so we can multiply the first term by 1 and the second term by 2:
(3/2) x 1 = 3/2(1/2) x 2 = 1
Therefore, the simplified ratio is: 3/2 capsicums : 1 onion