AMO 2018 — Primary 6 (Grade 6) Question 13

Given □ + △ + ◇ = 60, △ + ◇ + ☆ = 44, ◇ + ☆ + □ = 52, and △ + ◇ + ☆ + □ = 74, find the value of ☆ + □ + △.