Answer:
100
Step-by-step explanation:
we start by subtracting 20 from 70, which is 50
we double 50 to get 100
n = 100
20 + 1/2n = 70
subtract 20 from both sides
1/2n = 50
multiply both sides by the reciprocal of 1/2 which is 2
hope this helps
8+15+32+45= 100 minutes, or an hour and 40 minutes
whats the question
