A 9kg bag of mangoes for $12 is

1 answer:

3 0

A 9 kg bag of mangoes for $12 is. Given is the bulk unit rate of the mangoes. Let’s solve for the unit rate of each mango and its price. => Let’s analyze the given situation. It is said that in 9 kilograms of bag of mangoes, the costs of all of it is 12 dollars. Find how much the cost of 1 kg bag of mangoes is. => 12 dollars divided by 9 kilograms to get the value of 1kg bag of mangoes => 12 / 9 = 1.3 Thus, the unit rate is 1.3 dollars / kg

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The school is having a bake sale and the math club is bringing cupcakes. They have 180 total cupcakes, both chocolate and strawb

jeka57 [31]

Let $s$ be the number of strawberry cupcakes, and $c$ the number of chocolate cupcakes.
From our problem we know that the total number of cupcakes is 180, so $c+s=180$ . We also know that the number of chocolate cupcakes is eighteen more than twice the number of strawberry cupcakes, so $c-18=2s$ , or solving for $c$ : $c=2s+18$ .
Know we have our system of equations:
$\left \{ {{c+s=180} \atop {c=2s+18}} \right.$
We can conclude that the correct answer is B. c + s = 180 c = 2s + 18.

Lets solve our equations to find how many cupcakes of each they have:
from our second equation we know that $c=2s+18$ ; lets replace that value in our first equation to find the number of strawberry cupcakes:
$2s+18+2=180$
$3s=162$
$s= \frac{162}{3}$
$s=54$
Now that we know the number of strawberry cupcakes, lets replace that value in our second equation to find the number of chocolate cupcakes:
 $c=2(54)+18$
$c=108+18$
$c=126$
As a bonus, we can conclude that the math club have 126 chocolate cupcakes and 54 strawberry cupcakes.

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Answer:

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Step-by-step explanation:

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