IKMC 2027 - Grades 7-8 - Self-study SET 9 - Thematic Batch 3 Question 20

The pair 18 and 54 has its sum (54+18=72) equal to twice its difference (54−18=36). How many pairs of numbers, both less than 100, have this property?

Original printed choices: A) 1; B) 5; C) 25; D) 33; E) 49

Editorial task: Identify the missing domain and distinguish the literal and intended counts.