JoJo3671
24.09.2019 •
Mathematics
Jim and lisa had a total of $300. after jim boughy a jacket with 2/3 if her money,she had $90 less than lisa. find the cost of the jacket.
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Ответ:
$84
Firstly, what we must do, is establish a system of equations:
Due the circumstances, it is decided we will use the method of substitution:
↓
Now, we solve the 2-variable equation above:
Now, we must see how much money each one of them had & the price of the jacket:
Now we know that Jim had $126. In other words, $126 is of his money (total money).
So, if Jim has $126, which corresponds to of his money, of his money is:
Hope it helped,
BiologiaMagister
Ответ:
576.24 x 10^12 miles =
5.7624 x 10^14 miles
the answer is B