44-20
-6-+20
-8a-8b
10b+40
-2p-14
Answer:
4/6=t/(t+1)
Step-by-step explanation:
4/6=t/(t+1)
The answer is 93
If we sorted out the number of each hours, the sequence will look like this
57 _ 69 _ 81 _ x _ 105
(in which x is the fourth hour of work)
We can see from the sequence that each hours, the mailman add additional 12 letters.
(69 - 57 = 12)
(81 - 69 = 12) . . . . proof
So, the amount of letters on the fourth hour would be:
81 letters + 12 letters = 93 Letters
-69= 7v-6 so v equals 74 or something
