Let x represent the number of liters of 50% acid Theresa puts into the mix. The the number of liters of 30% acid will be (420-x). The total amount of acid in the final solution will be ...
0.50x + 0.30(420-x) = 0.45(420)
0.20x + 126 = 189 . . . . . . . . . . . . . . . simplify
0.20x = 63 . . . . . . . . . . . . . . . . . . . . . subtract 126
x = 63/0.20 = 315 . . . . . . . . . . . . . . . liters of 50% solution
(420-x) = 420-315 = 105 . . . . . . . . . liters of 30% solution
Theresa should mix ...
105 liters of 30% solution
315 liters of 50% solution
Answer:
7.8
Step-by-step explanation:
1. you add all the numbers together
2. Divide by 5
3. Then divide answer by 10
4. You get your final answer
Answer:
95 cents per Muffin
Step-by-step explanation:
Set up the long division.
8 | 7 6 0
2. Calculate 76 ÷ 8, which is 9 with a remainder of 4.
9
8 | 7 6 0
7 2
4
3. Bring down 0, so that 40 is large enough to be divided by 8.
9
8 | 7 6 0
7 2
4 0
4. Calculate 40 ÷ 8, which is 5.
9 5
8 | 7 6 0
7 2
4 0
4 0
5. Therefore, 760 ÷ 8 = 95.
Answer:
hi
Step-by-step explanation:
um sometimes i feel like i always have to be perfect because of my parents high expectations for me,but sometimes i can live up to those expectations and i feel like i failed them and i feel like i always have to be perfect my hair my clothes my grades i hate it . i try to be me but i end up doing something wrong and i just feel sad.
