Answer: 150
Step-by-step explanation:
Let x be the unknown number
12% of x= 18
that is; 12/100 * x = 18
12x/100 = 18
cross multiply
12x = 18 * 100
12x = 1800
divide both sides by 12
x = 1800/12
x = 150
Let N be the wanted number.
We are told that 12% of N = 18
Then:
N·12/100 = 18
We know how to clear N
N = 100·18/12
N= 1800/12 = 150
Answer = 150
