The ratio of boys to girls in home room is 2:3. If there are 8 boys how many girls are there .

Mathematics

2 answers:

Anton [14]3 years ago

7 0

Answer:

Step-by-step explanation:

12 girls

which mean 1 ratio = 4

2 ratio = 8

which means 3 ratio must = 12

Serhud [2]3 years ago

6 0

Answer:

12 girls

Step-by-step explanation:

multiply 8 by 3/2 to get 12.

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Step-by-step explanation:

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Volunteers helped clean up 8.2 kg of trash in one neighborhood and 11 1/2 kg in another. They sent 1 1/4 kg to be recycled and t

Ivan

Answer: $18.45\ kg$ or $18\frac{9}{20}\ kg$

Step-by-step explanation:

We can convert from mixed numbers to decimal numbers:

$11\frac{1}{2}\ kg=(11+0.5)\ kg=11.5\ kg\\\\1\frac{1}{4}\ kg=(1+0.25)\ kg=1.25\ kg$

Since they cleaned up 8.2 kilograms of trash in one neighborhood and 11.5 kilograms in another neighborhood, the total trash they cleaned up was:

$Total=8.2\ kg+11.5\ kg\\\\Total=19.7\ kg$

We know that they sent 1.25 kilograms to be recycled. Then, in order to calculate how many kilograms of trash they threw away, we must subtract the total kilograms of trash they cleaned up and the kilograms they sent to be recycled.

Then:

$19.7\ kg-1.25\ kg=18.45\ kg$ or $18\frac{9}{20}\ kg$