How do I add 40% to $2800?

  1. profile image52
    jboyd22posted 15 years ago

    How do I add 40% to $2800?

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  2. rented_halo profile image60
    rented_haloposted 15 years ago

    You should multiply 2800.00 by 1.4...

    On a calculator you would enter "2800" "x" "1.4" and that should yield 140% of $2800... 

    You could also do it by multiplying .4 or 40% by 2800 and then adding the answer to 2800.

    On a calculator you would enter "2800" "x" ".4" and then add that answer to 2800.

    Either way it should equal $3920

    Hope this helps.

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  3. Lisa HW profile image65
    Lisa HWposted 15 years ago

    A couple of alternative ways:

    A quick way to get to 40$ is to first know that 10% is 280 (because you can always find 10% by moving the decimal point over one play).

    Now that you know 10% is 280, multiply 280 by 4 (because 40 is 4 times 10). 

    4 x 280 =1120.       Just add the 1120 to $2800.  (You get  $3,920)

    Yet another easy way:  Multiply $2800 by 140% (because $2800 is 100% of itself, and you want to add the other 40%).

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