AMC 10A 2026 (Problem 1)
Helena's vinyl record collection contains 33 LP records and 45 EP records. An LP record plays for three times as long as an EP record. How many more EP records must Helena buy so that the total playing time of her EP records equals the total playing time of her LP records?
(A) 45 (B) 54 (C) 63 (D) 78 (E) 87
Let be the playing time of an EP record and be the number of additional EP records Helena must buy.
(B) 54