Jim has a total of 77 red and blue marbles. the number of blue marbles is five more than twice the number of red marbles.

Let r and b represent, respectively, the number of red and blue marbles. We know a couple of things:

So, we have the following system:

The second equation gives a way to express b in terms of r. Use this expression in the first equation:

So, if Jim has 24 red marbles, he has blue marbles.

b) 1/3 * 1/5

step-by-step explanation:

each smallest part is 1/15 since the written one is 1/5 and it's divided by 3 equal parts. (1/5 )/3 = 1/15 = 1/3 * 1/5