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Answer:
0.1
Step-by-step explanation:
2x*4 = 0.8
x = 0.1
Perimeter is the sum of all sides, thus 4 * 2x.
Let x + 15 = total penguins
15/ (x +15) = .30
15 = .30x + 4.5
.30x = 10.5
x = 35
Total penguins = 15 + 35 = 50
Double Check
15 / 50 * 100 = 30% Correct!!!
Let the unknown be n, then:
n × 3 = 8 × 2
n × 3 = 16
n = 16 ÷ 3
n = 5.333
3/4 is .75
and
11/16 is .6875
so
The first one is greater
:)