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liberstina [14]
3 years ago
5

Ella collects 50 bottles to recycle. Of the bottles she collects, 19 are plastic and the rest are glass.

Mathematics
1 answer:
nekit [7.7K]3 years ago
8 0
QUESTION A

The total number of bottles Ella collected is
50


The number of bottles that are plastic is

19

The percentage of bottles that are plastic is

=  \frac{number \: of \: plastic \: bottles}{total \: number \: of \: bottes}  \times 100\%

=  \frac{19}{50}  \times 100\%

= 19 \times 2\%
= 38\%

Therefore 38% of the bottles are plastic.



QUESTION B

The total number of bottles that are glass is
50 - 19 = 31

The total number of bottles Ella collected is
50

The percentage of bottles that is glass is
=  \frac{number \: of \: glass \: bottles}{total \: number \: of \: bottles}  \times 100\%

=  \frac{31}{50}  \times 100\%

= 31 \times 2\%
= 62\%

Therefore 62% of the bottles are glass
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Then, the possibilities are

For 1 g, we can choose 3w, 4w, 5w, 6w.

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For 4g, we can choose, 1w, 2w, 3w, 4w.

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