Jim has a total of 77 red and blue marbles. The number of blue marbles is 5 more than twice the number of red marbles. How many red marbles are there?

Answer 1

R = red marbles

R + 2R + 5 = 77

3R + 5 = 77

3R = 72

R = 24

Answer 2

R + 2R + 5 = 77

Answer 3

3R + 5 = 77

Answer 4

3R = 72

Answer 5

R = 24

Answer 6

R = red marbles