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John has some sweets to give to his friends. If he gives 4 sweets to his friends, he will need 2 more sweets. If he gives 7 sweets to each friend, he will need 17 sweets. How many friends does John have? How many sweets does John have?

  • Maths -

    7-4=3 (difference of 3 sweets given)
    For a difference of 3 sweets, total sweets needed:
    15 sweets need for each friend having 3 more sweet, hence the number of John friend:

    If John give each friends 4 sweets:
    However John is short of 2 sweets (needs 2)
    Therefore, John has 18 sweets

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