Find the value of 'n' to make each statement true.

Question

1. 22 times n is between 80 and 85

Answer 1

1.22 times n is between 80 and 85:
80 < 1.22n < 85
Separate into two:
80 < 1.22n
65.57 < n

1.22n < 85
n < 69.672

Rewrite it again,
65.57 < n < 69.672

hope this helps~ `u`