Give the step-by-step reasoning process and then the final answer. Liam and Claire picked and sold oranges to save for their mother's birthday gift. Liam picked 40 oranges and sold them at $2.50 for 2 while Claire picked 30 oranges and sold them at $1.20 each. If all of their oranges were sold, how much are they going to save for their mother's birthday gift?
Liam sold 40 / 2 = 20 sets of oranges that cost $2.50 for each set. So, Liam earned $2.50 x 20 = $50. Claire earned $1.20 x 30 = $36. Thus, they were able to save $50 + $36 = $86 for their mother's birthday gift.
The final answer: 86.