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A person needs 6 steps to cover a distance of one slab. If he increases his foot length (step length) by 3 inches, he needs only 5 steps to cover the slabs length. What is the length of the each slab

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A person needs 6 steps to cover a distance of one slab. If he increases his foot length (step length) by 3 inches, he needs only 5 steps to cover the slabs length. What is the length of the each slab
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  1. 90 inches

    Slab = 6(x) where x is each step
    Slab = 5(x + 3)

    6(x) = 5(x + 3)
    6(x) = 5(x) + 15
    x = 15 inches

    So 6(x) = 6(15) = 90

    Check: 5( x + 3) = 5(18) = 90

    Slab size is 90 inches