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lenna23
11.12.2019 •
Mathematics
There are blue, yellow and green tokens in a box. the ratio of the number of blue tokens to the number of yellow tokens is 2: 3. the ratio of the number yellow tokens to the number of green tokens is 1: 5. what is the ratio of the number of blue tokens to the total number of tokens?
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Ответ:
y:g=1:5
we know that y=y so make the units same
in the b:y, y=3 units
in the y:g, y=1 units
so times the second equaton by 3 to get
b:y=2:3 and
y:g=3:15
so
b:y:g=2:3:15
now find teh ratio of blue to ttotal
total=b+y+g=2+3+15=20
blue=2
2 to total=2:20 or 1:10
Ответ: