SOLUTION: on monday mr. toad bought 10 gourmet flies and 4 gourmet worms for $34. on tuesday he bought 6 gourmet flies and 12 gourmet worms for $30. find the price of a gourmet fly and the p

Algebra ->  Problems-with-consecutive-odd-even-integers -> SOLUTION: on monday mr. toad bought 10 gourmet flies and 4 gourmet worms for $34. on tuesday he bought 6 gourmet flies and 12 gourmet worms for $30. find the price of a gourmet fly and the p      Log On


   



Question 244620: on monday mr. toad bought 10 gourmet flies and 4 gourmet worms for $34. on tuesday he bought 6 gourmet flies and 12 gourmet worms for $30. find the price of a gourmet fly and the price of a gourmet worm.(use a 5-step solution with two variables.)
Answer by blwinbbbles(106) About Me  (Show Source):
You can put this solution on YOUR website!
Start with what we know... f = flies w = worms
(1)10f + 4w = $34
(2)6f + 12w = $30
so we want to eliminate a variable...the best way to do this is pick the w..since they need to be opposite is order to equal zero..we will need to do something to the equation(1) to make that happen.
so multiple equation (1) by -3 that will give us
(1)-30f - 12w = -102 now add that to equation (2)
so:
-30f - 12w = -$102 added
6f + 12w = $30
Equals
-24f + 0 = -$72
-24f = -$72
divide both sides by -24
then:
f =$3 so now we know that the flies are $3 each..
plug that into equation (1) and solve for worms (w)
10(3) + 4w = $34
30 + 4w = $34 subtract both sides by 30
so:
4w = $4 divide both sides by 4 and w = $1
SO NOW YOU KNOW THAT Worms are $1 apiece and flies are $3 apiece