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3 years ago

Someone help with #1

Mathematics

2 answers:

Drupady [299]3 years ago

6 0

My answer was wrong, please delete this

snow_lady [41]3 years ago

4 0

Ok, first we set up 2 equations with the given info
let chips = c & pretzels = p

$5c + 9p = 16.95$
$10c + 10p = 22.50$

next we solve for a single variable in one of the equations (I chose the first one)
$c = \frac{16.95 - 9p}{5}$

now plug it into our second equation
$33.90 - 18p + 10p = 22.50$
simplify
$11.40 = 8p$
divide
$1.425 = p$

next plug p back into our first equation
$5c + 9(1.425) = 16.95$
$5c = 4.125$
$c = .825$

Chips cost = $0.825
Pretzels cost = $1.425

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