Ok so she spent $42 on food.... she bought 3 things; milk, cheese, and meat.... the milk cost 1/2 the cheese coast... the meat coast 4 times the cheese
Her is how to do it hope it helps you!
From left to right:
(4 3/8), (6 2/9), (3/10), (5 1/15), (3 5/12), (1 7/16), (5 9/40), (2 7/22), (3/16), (3 1/9), (2 9/28), (5 1/8), (7 3/16), (5 3/20), (3 11/40), (3 3/14)
8×9=72
5×8=40
So the answer is 8
Tracking a change over time.