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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

User JoeyCK
by
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2 Answers

5 votes

Answer:

Option A. We can expect 40 giant swallowtails.

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.

User Andrey Volk
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6.6k points
3 votes
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
User Espanta
by
7.2k points