A bag contains purple marbles and white marbles, 68 in total. The number of purple marbles is 4 less than 5 times the number of white marbles. How many purple marbles are there?

56 purple marbles.

Step-by-step explanation:

Let be "p" the number of purple marbles in the bag and "w" the number of white marbles in the bag.

You can set up the following System of equations:

You can use the Substitution method to solve the System of equations. The steps are shown below:

1. You need to substitute the second equation into the first equation:

2. Now you must solve for "w":

3. Substitute the value of "w" into second original equation and then evaluate in order to find the value "p":

the square root of what number? if you add that, then someone will probably answer the question.

step-by-step explanation:

the shape,the size and the distance