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HIGHLIGHT >
AND NOTES
(a) Taro costs $7.00 per kilogram.
What is the cost of a taro that weighs 510 grams?
$2.83
$3.57
$4.28
$5.10
(b) A taro costs $4.20. What is the weight of the taro in grams (g)?

Respuesta :

Answer:

A) $3.57

B) 600g

Step-by-step explanation:

A) 7.00÷1000=0.007

0.007 x 510 = 3.57

B)4.20 ÷ 0.007 = 600g

Answer: a) $3.57   b) 600 g

Step-by-step explanation:

a)  1 kg=1000g

Let's do the proportion:

$7.00 - 1000 g

  $x    -  510 g

Hence,

[tex]\displaystyle\\x=\frac{7*510}{1000} \\\\x=\frac{3570}{1000} \\\\x=3.57\ dollars[/tex]

b)  

Let's do the proportion:

$7.00 - 1000 g

$4.20 -    x g

Hence,

[tex]\displaystyle\\x=\frac{4.2*1000}{7} \\\\x=\frac{4200}{7} \\\\x=600 g[/tex]

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