Answer:
I think one.
Step-by-step explanation:
Because 16 divided by 4 is 4 minus the 3 and its 1. So I think 1 is the mystery number.
hope i help
Answer:
1
Step-by-step explanation:
"Three is added to a number"
1 + 3 = 4
"the sum is multiplied by 4"
4 x 4 = 16