Free Online 11+ Maths Tutoring – Open to All

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Free Online 11+ Maths Tutoring – Open to All Hi! I’m Rithvik Muthuvelu , a GCSE student at King Edward’s School, Birmingham , and I’m offering free weekly online maths sessions to help students prepare for the 11+ entrance exams . These sessions are open to anyone who wants to improve their maths skills—no school restrictions. What You’ll Get Free weekly online maths classes Focused 11+ preparation : problem-solving, arithmetic, word problems, exam strategies Small-group format for better interaction Ideal for Year 4 and Year 5 students How to Join Weekly Session: Saturdays at 2:00 PM Google Meet Link: https://meet.google.com/nrk-iwmh-gij Contact Email: rithvikmu1@gmail.com If your child is preparing for the 11+ and would like extra support, feel free to join the class or get in touch. Looking forward to helping more students learn and grow! — Rithvik Muthuvelu  
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How many marbles?

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Sarah had a bag of marbles. She gave half of them to her friend Tom. Then, she gave a third of the remaining marbles to her sister. If she had 18 marbles left after that, how many marbles did she have at the beginning?

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  1. Rithvik24 March 2025 at 06:45

    Let’s work backwards from what we know.

    Step 1: Let’s say after giving to her sister, she had 18 marbles left.

    That means the 18 marbles are two-thirds of what she had after giving to Tom, because she gave 1/3 to her sister.

    Let that amount be R (remaining after giving to Tom).

    So:

    (2/3) × R = 18
    Multiply both sides by 3:

    2R = 54
    Now divide by 2:

    R = 27

    So, Sarah had 27 marbles after giving half to Tom.

    That means the 27 marbles are half of her original number.

    So original number = 27 × 2 = 54

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