Explanation

(a)

(i) `2/3xx square =10/30`

`=2/3xx5/10=10/30`

Therefore, the number in the box □, such that
`=2/3xx square =10/30 `is `5/10`

(ii)The simplest form of the number obtained in`5/10` is `1/2`
(b)
(i) `=3/5xx square=24/75`
`=3/5xx8/15=24/75`
Therefore, the number in the box `square`, such that `3/5xx square =24/75` is `8/15`
(ii) As `8/15` can,t be simplified further. therefore ,its simplest form is `8/15`