Who does the chores at home?

In Africa, its taken to be the wife's duty to cook, wash, clean, take care of the children and generally run the home, while the man provides the money for running the home.

Who made this rule? No one, it is just sort of a norm having been passed on from our parents and grand parents.

Times have changed and a lot of wives are not just stay at home mothers or "housewives" as its commonly called.
They work 8am-4pm and sometimes later than 4pm and some own their personal businesses.

Is it still expected for the woman to work/ run her business and also completely run the home?
In homes where there are helps, say a cook, 1/2 nannies, a driver, a gateman and all that to do chores and run errands, the husband can afford to just provide the money and not do anything else, but he will be providing a lot of money to pay these domestic servants and take care of fees, feeding, clothing all that his family needs.

Some men actually do not have the time. They are always away on trips and even when they r home based, they run around to make money and by the time they get home they are tired. Whereas when a woman is tired, she can still force herself to do somethings, i've noticed its not the same with a man.

Taking care of children is a full time job, we pick up after them, keep an eye on them always so they don't get hurt, prepare their meals, assist with homework, listen to them when they want to talk and a host of other little things.

So, how do we balance taking care of the home and working, in a scenario where there is no house help?
The easiest way in my opinion is for the husband to help, no matter how little.
While the wife is cooking, he can assist with home work. When she is bathing the children and getting them ready for school/church/outings, he can iron their clothes and set the table.
There are a lot of ways balance can be achieved and it involves everyone working together to keep the home.

Children should also be taught early to pick up after themselves and keep themselves busy in a good way when their parents are busy. It can be by drawing or coloring or doing something safe they enjoy.