Which invention impacted society by increasing labor hours and manufacturing at night time

"<the standard hours allowed for the actual units of finished outpu> × <the standard fixed manufacturing overhead rate per direct labor hour>."

Explanation:

explanation:

i have ni idea

it's a secular holiday. it is and was a custom developed to recognize the ending of a time and a wish for a good future. the kind of kiss you exchange, if you are single, is intended to predict what kind of year you will have in the coming year.

it is saying good bye to the last year with all its ups and downs, and hello to the new year, with all its hopes and dreams.