issb mathematics MCQ #576

Reduce 640 by 15%. Result?

issb mathematics MCQ #576

  1. Question 1

    Q1. Reduce 640 by 15%. Result?

    • A) 530
    • B) 540
    • C) 544
    • D) 550

    Answer: 544

    Explanation: Fifteen percent of 640 is 96 so result is 544. Work each step carefully; ISSB math rewards accuracy under time pressure.