Answer:
The estimated amount earned by band each day is $107.
Explanation:
Let the amount Hey band earned each night = $k
Now, the band played for 3 nights.
So, the amount earned in 3 days = 3 x ( amount earned each day)
= 3 x $k = $3k
Also, the band earned an amount of $321 in 3 days.
⇒$3k = $321
or, k = 321/3
⇒ k = 107
Hence the estimated amount earned by band each day is $107.