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Crystal's cafe has regular coffee and decaffeinated coffee. This morning, the cafe served 30 coffees in all, 40% of which were regular. How many regular coffees did the cafe serve?

Answer :

Answer:

Crystal's Cafe served 12 regular coffees.

Step-by-step explanation:

Let's denote:

  • R as the number of regular coffees served.
  • D as the number of decaffeinated coffees served.
  • The total number of coffees served = R + D = 30.

Given that 40% of the total coffees were regular,

we can write the equation:

[tex]\sf 40 \% \textsf{ of } 30 = R[/tex]

Solving for R:

[tex]\sf R = \dfrac{40}{100} \textsf{ of } 30[/tex]

[tex]\sf R =0.40 \times 30[/tex]

[tex]\sf R = 12[/tex]

So, Crystal's Cafe served 12 regular coffees.

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Rewritten by : Jeany

Answer:

[tex]\boxed{\rm{12 \: regular \: coffees}}[/tex]

Step-by-step explanation:

The cafe have two types of coffee: regular and decaffeinated. Total no. of coffees served in the morning = 30 and out of which 40% were regular. Then no. of regular coffees in number are:

[tex] = 40\% \: of \: 30[/tex]

[tex] = \frac{40}{100} \times 30[/tex]

[tex] = \boxed{12}[/tex]

~Total no. of regular coffees served were 12 (ans).

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