anonymous
  • anonymous
heidi spent 1/2 of her babysiting money on a dvd and 1/2 of the remaining amount on a pair of jeans. after she spent $15.75 at the movie theater. she had $7.80 left. how much money did heidi earn babysiting? please help!!!!!!
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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katieb
  • katieb
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anonymous
  • anonymous
ill help :) give me amin to write it out
anonymous
  • anonymous
ok
anonymous
  • anonymous
she had 94.20$

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anonymous
  • anonymous
want me to explain how i got that?
anonymous
  • anonymous
yes
anonymous
  • anonymous
ok lets let T represent the total amount that she made ok?
anonymous
  • anonymous
so, after she bought the DVD 1/2 T was left right?
anonymous
  • anonymous
after that it said she spent that half, which is technically, 1/4 of the total.
anonymous
  • anonymous
following that from the 1/4 of the total, she spent another 15.75$ meaning that you are now left with 1/4 of the total amount she made - 15.75$
anonymous
  • anonymous
so if we know that wat she has left is 7.80$, then we can say that 1/4 T(total she made) -15.75 = 7.80 therefore u isolate for T
anonymous
  • anonymous
this will then give you 1/4T = 23.55 multiply out the 4 from the left side, and multiply the right side by 4 as well, and u get T= 94.20$ hope that helps
anonymous
  • anonymous
do you understand how i got the answer?
anonymous
  • anonymous
yes
anonymous
  • anonymous
ok

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