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In the last hour, Ellie observed 34 monarchs, 56 gulf fritillaries and 8 giant swallowtails visit her butterfly garden. If 480 butterflies visit her garden, how many can we expect will be giant swallowtails?
A. 40
B. 80
C. 173
D. 27

Respuesta :

sqdancefan
Of the 98 butterflies cataloged, 8 were giant swallowtails. If about 5 times as many butterflies visit, we expect about 5 times as many to be giant swallowtails.
  5*8 = 40

The appropriate choice is ...
  A. 40

Answer:

Option A. We can expect 40 giant swallowtails.

Step-by-step explanation:

Ellie observed that in her butterfly garden there are different types of butterflies as :

Monarchs = 34

Gulf fritillaries = 56

Giant Swallowtails = 8

Total = 34 + 56 + 8 = 98 butterflies

There are 8 Giant Swallowtails out of 98 so the percentage of them :

8 ÷ 98 × 100 = 8.163 %

Almost 8.163% butterflies are Giant swallowtails. If 480 butterflies visit her garden,

8.163% of 480 = 0.0816 × 480

= 39.168 rounded to 40

We can expect 40 giant swallowtails.

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