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17 September, 23:05

Write a number in each blank to make the statements true. Six pencils are equal in value to two rulers. One ruler is equal in value to two erasers. Twelve pencils are equal in value to erasers. Two erasers are equal in value to pencils. One ruler and four erasers equal the value of pencils.

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  1. 17 September, 23:19
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    P=value of a pencil

    r=value of a ruler

    e=value of an eraser

    6p=2r

    r=2e

    alrigty

    we can divide the fist one by 2

    3p=r

    so

    3p=r=2e

    neato

    12 pencils is equal to? erasers

    3p=2e

    times both sides by 4

    12p=8e

    8 erasers

    2 erasers are equal to? pencils

    3p=2e

    3 pencils

    1 ruler and 4 erasers are equal to? pencils

    3p=r=2e

    r+4e=3p+2 (2e) = 3p+2 (3p) = 3p+6p=9p

    9 pencils

    Twelve pencils are equal in value to eight erasers

    Two erasers are equal in value to three pencils

    One ruler and four erasers are equal the value of nine pencils
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