Simple,
writing out the problem...

Simplify it...
-4x(6+5-1)
-4x(11-1)
-4x(10)
-40x
Making it look like...

Cancel out the common factors...
Thus making the answer:

.
The answers For A,B,C.
A.2
B.2.25
C.1
I don’t know there’s no picture B?
Answer:
-2
Step-by-step explanation:
4x:3=6:5.
4x/3=6/5
4x × 5=6×3
20 X=18
X=18-20
X=-2
Divide the silver present in the bar by the total weight of the bar to find the percentage of silver in the bar.

Multiply this decimal by 100 for the percentage.

Rounded to the nearest tenth
, 71.4% of the weight of the bar is silver.