Problem 1
Let be the 2 numbers thus,
(1)
(2)
Divide equation (2) by 3 thus,
Substitute that into equation (1) thus,
Thus,
Thus,
Thus,
Q.E.D.
hi im in a hurry and i dont get a few problems please help...
-The diffrence between two numbers is 16. Three times the larger number is nine times smaller. What are the numbers? Show some work if you can please....
-A gardener has two kinds of solutions containing weed killer and water. One solution is 5% weed killer and the other solutiion is 15% weed killer. The gardener needs 100 liters of a 12% solution of weed killer and wants to make it by mixing it himself. How much of each solution should he use?
THX FAST PLX!
Problem 2:
Let be the amout of weedkiller solution for 5% and 15% respectively.
Thus, he want to make 100 thus,
Now for the second part since the first solution has 5% the amount of actual weedkiller is similarily the amount of actual weekiller for the second one is .
Now he mixes them in such a way that he has 12% of weedkiller thus, there are
12%(100) of actual weedkiller thus, 12. Thus, the two equations are:
Multiply the second by 20 thus,
From the second subtract the first,
Thus, of 15% solution.
Thus, of 5% solution.