Question

factory A has printed 700 books and Prints 50 new books every week. Factory has printed 300 books and prints 100 books every week. How many weeks will it be before a factory B has printed as many books as Factory A?

Answer 1

8 weeks. By that time both factories will have printed 1,100 books
Hope this helps

Answer 2

700 - 300 = 400
400/ 100 = 4
4 x 50 = 200
200/ 100 = 2

2+4= 6
6 weeks