English for Today by Ganiu Abisoye Bamgbose (Dr GAB)
INDICATING OWNERSHIP WITH THE APOSTROPHE
Rule 5
When a thing is owned by two or more persons, the last to be mentioned reflects the ownership:
Kunle’s, Dele’s and Esther’s slot. ✖️
Kunle, Dele and Esther’s slot. ✔️
Rule 6
When different items are differently owned by two or more persons, each person reflects ownership:
Kunle’s, Dele’s and Esther’s slots. ✔️
Rule 7
Apostrophe is also used with certain idioms:
Donkey years ✖️
Donkey’s years ✔️
A stone throw ✖️
A stone’s throw ✔️
GAB
https://englishdietng.com/indicating-ownership-with-the-apostrophe-2/
