But can you solve in under ten minutes .....? A boy counts 2 marks for each question he gets right and -1 for each question he gets wrong. If he scores 270 marks in total after an exam with 210 questions. How many questions did he get right ?..,,
😂 My partner says she knows what you mean about my waffling. Made this video when first starting out so been trying to improve with every video. Thanks for the feedback 👍