222.80
Step-by-step explanation:
My keyboard won't do pounds. I'll leave the units off and just use pure numbers.
Magazines
Number of magazines = 50
Commission = 10/100
Price of magazines = 7
Books
Number of books = 21
Cost per book = 12
Commission = 15/100
Solution
Income from magazines = 10/100 * 7 * 50 = 35
Income from books = 15/100 * 12 * 21 37.80
Basic Pay 150
Take home pay 222.80