Answer:
10*40
80*5
20*20
Step-by-step explanation:
20*20=400
80*5=400
10*40=400
 
        
             
        
        
        
Answer:
The correct answer is: She bought 2 dress shirts and 5 t-shirts
Step-by-step explanation:
Let's marked dress shirts with x and t-shirts with y.
Now we will make equations to solve this problem:
x + y = 7  =>  y = 7 - x
40 x + 8 y = 120
When we replace y = (7 - x) in the previous equation we get:
40 x + 8 (7 -x) = 120  40 x + 56 - 8 x = 120  => 32 x = 120 - 56 =>
32 x = 64  => x = 64/32 = 2 => x = 2
y = 7 - x = 7 - 2 = 5 =>  y = 5
x = 2 dress shirts
y = 5 t-shirts
God with you!!!