30% = 0.30
0.30x = 12
Divide both sides by 0.30
X = 12/0.30
X = 40
Answer:
x=40
Step-by-step explanation:
30% is the same as 3/10.
-So now you have 3/10 of x = 12.
The term “of” in the equation is the same as multiplication.
-So now you have 3/10 · x = 12 (the dot is multiplication)
Multiply both sides by the reciprocal of 3/10, which is 10/3
-So now you have x=120/3, which is equal to x=40 (that’s you answer)
You can check your answer by plugging in 40 for x.
30% of 40 is indeed equal to 12.
Hope this helps and answers your question :)
