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Lana71 [14]
3 years ago
8

18 girls and 12 boys on a swim team. what is the percentage of boys?​

Mathematics
2 answers:
Gekata [30.6K]3 years ago
7 0

Answer:

40%

Step-by-step explanation:

30 total kids

12/30 as a decimal is 0.4

to make a decimal into a percent you move the decimal point 2 times to the right

that would be 40

then add the percent to make 40%

nekit [7.7K]3 years ago
6 0

Answer:

40%

Step-by-step explanation:

The first step is to add 18 girls + 12 boys, which gives you the total number of people on the swim team, 30.

Next, you divide the 12 boys by the total swim team members, so:

\frac{12}{30} = 0.4

Then, you multiply 0.4 by 100 to get the percentage:

0.4 × 100 = 40

Therefore, the swim team is made up of 40% boys, and 60% girls.

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Answer:

Klorina's rate in still water is 4.5 km/h

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Step-by-step explanation:

Let

x km/h = Klorina's rate in still water

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<u>With the current (current helps):</u>

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Subtract these two equations:

(x+y)-(x-y)=5-4\\ \\x+y-x+y=1\\ \\2y=1\\ \\y=0.5\ km/h

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