She bought it at a 15% discount because 15 percent of 40 is 6 and 40-6=34
Well first add up all the numbers of marbles (which is 34 in total) and divide it by the number of black marbles.
(which should give you 8/34)
Then simplify the fraction and you should get 4/17
P=22 rewrite the question as -8+p/11=-6 then move all terms not containing p to the right side p/11=2 multiply both sides of the given equation by 11, the reciprocal, 11*p/11=11*2
The answer is 104,975. If you multiply 95 by 17 by 65, you'll get your answer. Hope this helps!
