elmakol123 elmakol123

25-02-2019
Mathematics

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A bag contains green marbles and blue marbles, 36 in total. The number of green marbles is 4 more than 3 times the number of blue marbles. How many green marbles are there?

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abbiekiing abbiekiing

25-02-2019

number of blue marbles = n
number of green marbles = 3n+4

n+3n+4=36
4n+4=36
4n=32
n=8

sub n=8 into 3n+4

=3(8)+4
=24+4
=28

therefore there are 28 green marbles

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