Question

at sams fish market, it costs $18 for 2 kilograms of tuna. at this rate, how much does it cost for 10 kilograms of tuna?
(a) let c be the unknown cost of tuna (in dollars). using the values below, create a proportion that can be used to find c.
values: c, 18, 2, 10
___ = ___
___ ___
(b) use the proportion from part (a) to find the cost of 10 kilograms of tuna. do not round any computations.
$

Explanation:

Step1: Set up proportion

$\frac{19}{2} = \frac{C}{10}$

Step2: Solve for C via cross-multiplication

$2C = 19 \times 10$

Step3: Isolate C

$C = \frac{19 \times 10}{2}$

Step4: Calculate final value

$C = 95$

Answer:

a) The proportion is $\boldsymbol{\frac{19}{2} = \frac{C}{10}}$
b) $\boldsymbol{95}$