Ajar contains 4 brown marbles and 9 yellow marbles.
event a = drawing a yellow marble on the first draw
event b = drawing a brown marble on the second draw
if two marbles are drawn from the jar, one after the other without replacement, what is p(a and b) expressed in simplest form?

Okay so n is going to represent our first number. since the second number of five times greater than n, the second number will be represented as 5n. for us to figure out the two  numbers we need to have  the value of n first. this is going to be done by adding the two numbers together, n and 5n. it can be simplified as 6n, which the problem states is equal to 72. divide 72 by 6n and you can solve for n.  n+5n=726n=72n=(72/6)n=12  now that we know the value of n, we have to multiply 5 times 12 which equals 60. so our two numbers/integers are 12 and 60