None
None
None
replace
replace
You have the number "thirty" and the kanji 代. You learned 代 means "substitute," but it can also mean era. What's the "thirty era"? It's one's thirties.
This uses on'yomi for all the kanji, so you should be good to go here!
あの男は三十代です。
The man over there is in his thirties.
三十代で、この会社に入りました。
I joined this company in my thirties.
三人の子どもが生まれたとき、父と母は三十代でした。
My parents were in their thirties when they had their three children.
An update is needed before you can continue but you have more than one WaniKani tab open.
Finish up whatever you are doing on the other tab(s), then close them to continue.
The update will complete automatically once the other tab(s) are closed.