Emily spent X dollars on Friday, twice that amount on Saturday, and then three times X on Sunday. Over the three days, she spent $120. What is the value of X, in dollars?
Step-by-step reasoning:
20
She spent X dollars on Friday.

She spent 2X dollars on Saturday.

She spent 3X dollars on Sunday.

X + 2X + 3X = 120.

6X = 120.

X = 20.

.

Thus, the answer is 20