13% of what is 78
"what" is the unknown, so use x for what.
"of" in math usually means a multiplication.
"is" means "="
13% * x = 78
0.13x = 78
x = 78/0.13
x = 600
Answer: the number is 600
33 years old would be correct
3x+7=4x
Move the 3x to the other side
7= 4x-3x
7=x
Answer:
100 feet 8 inches for the first one
115 yards 2 feet for the second one
Step-by-step explanation:
length x width x height