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last year, Dale opened an investment account with $8,400. at the end of the year, the amount in the account had decreased by 7.5%. how much is this decrease in dollars? how much money was in his account at the end of the last year?questions to answer:decrease an amount ( )year end amount ( )

Respuesta :

We have that the decrease at the end of the year was of 7.5% of $8400. We can find this amount by multiplying 8400 by the decimal form of 7.5%:

[tex]8400(7.5\%)=8400(0.075)=630[/tex]

we have that the decrease in dollars is $630.

Now, to find the amount that was in the account at the end of the year, we have to find the difference between 8400 and the decrease 630:

[tex]8400-630=7770[/tex]

therefore, the year end amount is $7770

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