Answer:
what grade is this?
Step-by-step explanation:
32
you have to divide 224 by 7
10%
Step-by-step explanation:The difference of the two numbers is 420-378=42
42/420=0.1=10%.So the sofa's price decrease 10%
7% of 40 is 2.80
0.07 x 40 = 2.8