Homework Help: ALGEBRA WRITE EQUATION

Posted by marko on Sunday, September 30, 2012 at 12:19pm.

FOOD: each variety of apples cost $1.20/lb at a grocery store. you buy 4lbs of cortland apples and some gala apples for eating. the total cost is $7.20. how many lbs of gala apples did you buy?
i think i got the answer but not sure how to write it in equation.
Total $7.20 - 5.16 = $2.04 difference
4lb cortlad apple @1.29 = 5.16
? gala apples @1.29 = 2.04/1.29 =
1.581395349 lbs of gala bought
im not sure how to write this as equation
1.29 (x + 4) = $7.20

ALGEBRA WRITE EQUATION - Ms. Sue, Sunday, September 30, 2012 at 12:35pm
(1.2 * 4) + x = 7.2

Solve for x
ALGEBRA WRITE EQUATION - marko, Sunday, September 30, 2012 at 12:45pm
why (1.2 *4)
should it be: (1.29*4) +x = 7.20?
ALGEBRA WRITE EQUATION - Ms. Sue, Sunday, September 30, 2012 at 1:22pm
Each pound of apples costs $1.20.

" each variety of apples cost $1.20/lb"
ALGEBRA WRITE EQUATION - marko, Sunday, September 30, 2012 at 1:41pm
Im sorry i kept writing $1.29 and yes
1.20 sorry thanks
ALGEBRA WRITE EQUATION - marko, Sunday, September 30, 2012 at 1:44pm
so 4lb at 1.20 = 4.80
2lb at 1.20 = 2.40
ttl 7.20
gala apple bought 2lb
(1.2 * 4) +x = 7.20
4.80 + x = 7.20
4.80 -4.80 + x = 7.20 - 4.80
x = 2.40

thanks for your help and sorry again

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