Find the missing quantity. Two lengths are 3:10. The second is 120cm find the first length

Find the missing quantity. Two lengths are 3:10. The second is 120cm find the first length

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Alexandra

1 thought on “Find the missing quantity. Two lengths are 3:10. The second is 120cm find the first length”

  1. Step-by-step explanation:

    Suppose the two lengths are 3x and 10x

    Second one is 120.

    So, 10x=120

    x=12

    So, first length is 3x=3*12=36

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