Question

A bag contains green marbles and blue marbles, 104 in total. The number of green marbles is 8 more than 5 times the number of blue marbles. How many green marbles are there?

Answer 1

There are 88 green marbles!

g=numGreenMarbles
b=numBlueMarbles

g+b=104
g=5b+8

b=104-g
g=5(104-g)+8=520-5g+8
g=88