Answer:
The number is 170
Step-by-step explanation:
Let's solve for x, this way:
x = A number that decreased by 20% of itself, the result is 136
20% = 0.2
x - 0.2x = 136 (Like terms)
0.8x = 136
x = 136/0.8 (Dividing by 0.8 at both sides)
x = 170
Let's prove that x = 170 is correct
170 - 0.2 (170) = 136
170 - 34 = 136
136 = 136
We proved that x = 170 is correct
Answer:
170
Step-by-step explanation:
if it is decreased by 20% that means the 80% is 136, so 80% times the number would give you 136, 80%*x=136. So if you divide 136 by 80% you will get your answer.
