Question

A bag contains green marbles and blue marbles, 44 in total. The number of green marbles is 5 more than 2 times the number of blue marbles. How many green marbles are there?

Answer 1

31 green marbles.

Explanation:

Let G = # of green marbles.

Let B = # of blue marbles.

G + B = 44

G = 5 + 2*B

Solve by substitution

(5 + 2*B ) + B = 44

5 + 3B = 44

3B = 39

B = 13

so G = 31 green marbles