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Montano1993 [528]
3 years ago
5

Solve this problem. A florist sells holiday bouquets that use roses and carnations in a ratio of 2 to 7. She receives a shipment

of 343 carnations. How many roses will the florist need
​
Mathematics
1 answer:
DIA [1.3K]3 years ago
6 0

Let roses be R and carnations be C

"in a ratio of 2 to 7" means that the ratio of R to C is 2 to 7, meaning you'll have to cross multiply to translate it algebraically

R:C\\2:7\\7R=2C\\

since C = 343 we plug 343 in 7R=2C:

7R=2(343)\\7R=686\\R=\frac{686}{7} \\R=98

ergo, she needs 98 roses

to make sure of the answer:

"ratio of 2 to 7" is technically a fraction =>  \frac{2}{7}

and since the ratio of the roses to the carnations is the same as \frac{2}{7} we plug the values R = 98 and C=343:

\frac{R}{C}=\frac{98}{343}=\frac{2}{7}

check with calculator too, hope i helped <33

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