How many gallons of a 70 acid solution must be mixed with a 3 gal. of a 30% acid solution to make a 55% solution?

You would need 5 gallons of a 70% solution

Step-by-step explanation:

You can always use proportions to answer these types of questions.

The numerator will be the amount of acid and the denominator will be the amount of solution

30% of 3 gallons is 0.9.

8

step-by-step explanation:

to find the amount of gift bags to use all the supplies, find the gcf or greatest common factor. this is the largest number which multiplies evenly into each term.

48 has factors: 1, 2, 3, 4, 6, 8, 12. 16, 24, 48

80 has factors: 1, 2, 4, 5, 8, 10, 16, 20, 40, 80

64 has factors: 1, 2, 4, 8, 8, 16, 32, 64

the highest number factor they all share in common is 8. this means there will be 8 bags with 6 pencils, 10 markers, and 8 stickers in each bag.