Answer: Amount of 35% solution required = 100 milliliters
Amount of 87% solution required = 30 milliliters
Step-by-step explanation:
Given: Total solution required = 130 milliliters
Let x = Amount of 35% solution (in milliliters).
Then, Amount of 87% solution required = 130 - x
As per given,
Concentration = 0.35x +0.87(130-x)=0.47(130)

Hence, Amount of 35% solution required = 100 milliliters
Amount of 87% solution required = 130-100 milliliters =30 milliliters
Answer:
B.
Step-by-step explanation:
Answer:
It is the second one
Step-by-step explanation:
The answer is 30
because (2)(10) + 10
20+10=30
the 10 came from the m!!
There is 24 hours a day with 7 days a week which equals 168 hours total in a week. You will subtract 168 from 40 which will equal 128 hours left.
24 x 7 = 168
168 - 40 = 128
Answer: 128