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March 27, 2017

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Diego has $10 to spend on school supplies. He wants to buy a calculator for $5.50 and several packs of mechanical pencil for $1.50 each.

What inequality can be used to find the maximum number of packs of mechanical pencils Diego can buy?

A. 1.5p + 5.5 _< 10
B. 5.5p + 1.5 _> 10
C. 1.5p + 5.5 _> 10
D. 5.5p + 1.5 _< 10

  • 6th g-math - ,

    let p = number of packs of mech pencil
    the total amount he could spend is
    1.5p + 5.5
    and this amount cannot be greater than (but can be equal to) $10, since his only money is $10. Thus,
    1.5p + 5.5 _< 10

    it's A.

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