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Mathematics 15 Online
OpenStudy (anonymous):

which is best to buy A( $10.88 for 7 cans of tuna B( $11.55 for 6 cans of tuna C( $17.25 for 9 cans of tuna D( $15.31 for 8 cans of tuna

OpenStudy (anonymous):

@563blackghost

563blackghost (563blackghost):

You would do the same thing as before....we would divide the total by the number of cans...

RhondaSommer (rhondasommer):

divide each one (price over number) to see how much each is worth. the one worth the least each is your answer

563blackghost (563blackghost):

\[10.88 \div 7 = ?\]\[11.55 \div=? \]\[17.25 \div 9 = ?\]\[15.31 \div 8 = ?\] This will get you the unit rate...

RhondaSommer (rhondasommer):

you messed up the second one*

RhondaSommer (rhondasommer):

the one with the least unit rate is the best :)

563blackghost (563blackghost):

oops ^^

RhondaSommer (rhondasommer):

lol its all good :)

RhondaSommer (rhondasommer):

@meeep you good?

OpenStudy (anonymous):

so c I guess

RhondaSommer (rhondasommer):

nope. lets start with the first one

RhondaSommer (rhondasommer):

\[$10.88 divided by 7 is what\]

RhondaSommer (rhondasommer):

|[$10.88/7 ?\]

RhondaSommer (rhondasommer):

i cant TYPE

OpenStudy (anonymous):

0.64

RhondaSommer (rhondasommer):

i get this. 1.5542857142857142857142857142857 round to 1.6

RhondaSommer (rhondasommer):

are you sure you are placing it in the calculator correctly?

RhondaSommer (rhondasommer):

@meeep

563blackghost (563blackghost):

@meeep you are dividing wrong...you are doing...\[7 \div 10.88\]but you are suppose to divide\[10.88 \div 7\]

OpenStudy (anonymous):

1.554285714285714

OpenStudy (anonymous):

@RhondaSommer @563blackghost

RhondaSommer (rhondasommer):

yep

RhondaSommer (rhondasommer):

now do the other ones

RhondaSommer (rhondasommer):

and see wich one is least

OpenStudy (anonymous):

I would be b

OpenStudy (anonymous):

@RhondaSommer @563blackghost

563blackghost (563blackghost):

Incorrect...try again ^^

OpenStudy (anonymous):

so a

563blackghost (563blackghost):

Correct ^^ it would be A because the unit rate is the lowest out of the deals....great job

RhondaSommer (rhondasommer):

:) gh @meeep

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