Answer:
1 : 4
Step-by-step explanation:
Let x represent the amount of 30% solution for 1 unit of 5% solution. Then the amount of acid in the mix is ...
0.30x + 0.05·1 = 0.10·(x +1)
0.30x + 0.05 = 0.10x + 0.10 . . . . eliminate parentheses
0.20x = 0.05 . . . . . . . . . . . . . . . . subtract 0.05+0.10x
x = 0.05/0.20 = 1/4
That is, the ratio x : 1 is 1 : 4.
Answer:
84
Step-by-step explanation:
140% of 60 = 60 times 140% = 60 × 1.4 = 84
Answer:
2:3
Step-by-step explanation:
<u>First convert years to months: 3 years = 36</u>
24:36
<u>Then simplify the ratio</u>
24:36
24/2:36/2
12/2:18/2
6/3:9/3
2:3
Answer: 2:3
Answer:
-15
Step-by-step explanation:
(-9)^2+9/-9+3
81+9/-6
90/-6
-15
Answer:
4
Step-by-step explanation:
