The sign at the right shows the costs for a​ deep-sea fishing trip. How much will the total cost be for 1​ adult, 2​ children, and 1 senior citizen to go on a fishing​ trip? Use mental math.

DEEP-SEA FISHING
Adults
Children (12 & under)
Seniors (65 & up)
$31
$25
$29

The total cost will be ​$
  

The total cost for 1 adult is $31, for 2 children is $50 (2 x $25), and for 1 senior citizen is $29.

Adding these amounts together, the total cost will be $31 + $50 + $29 = $110.

To calculate the total cost for 1 adult, 2 children, and 1 senior citizen to go on a fishing trip using mental math, you can simply add up the costs for each individual.

In this case, the cost for 1 adult is $31, the cost for 2 children is $25 each (totaling $50 for both children), and the cost for 1 senior citizen is $29.

Therefore, the total cost will be $31 + $50 + $29, which equals $110.

So, the total cost for 1 adult, 2 children, and 1 senior citizen to go on a fishing trip is $110.

To calculate the total cost for 1 adult, 2 children, and 1 senior citizen to go on a fishing trip, use mental math as follows:

1 adult: $31
2 children: 2 x $25 = $50
1 senior citizen: $29

Add up the individual costs:
$31 + $50 + $29 = $110

Therefore, the total cost for 1 adult, 2 children, and 1 senior citizen to go on a fishing trip will be $110.