Answer:

Step-by-step explanation:
11/16 * 80 = 55
12+6n=30
6n=18
n=3
So the number would be three
It's the first option, 3/23
Let x be the original side length of the square
P=2(l+w)
70=2((2.5+x)+(2.5+x))
70=2(5+2x)
70/2 = 5+2x
35-5=2x
30=2x
15=x
Therefore, the original length of the square was 15"
Hope I helped :)
The 2 pennies weigh 5gram+2 dimes= THE ANSWER IS 9.54