Answer:
90
Step-by-step explanation:
120 - (25% × 120)
120 - 25% × 120
(1 - 25%) × 120
(100% - 25%) × 120
75% × 120
75 ÷ 100 × 120
75 × 120 ÷ 100
9,000 ÷ 100 = 90