Answer:
The answer is B
Step-by-step explanation:
Divide the distance by the time.
The new mixture has a total volume of 5 L + 9 L = 14 L.
70% of the 5 L alcohol solution is alcohol, so that it contributed 3.5 L of alcohol to the mixture. The pure water contributed no alcohol. So in the mixture, the concentration of alcohol is
3.5 L / 14 L = 0.25, or 25%
Here you go! Hope you now understand and find this helpful!
Answer:
The least possible sum for a+b+c is 18.
Step-by-step explanation:
As given a,b and c are positive integers and abc = 210
So, let us consider some situation in which the product abc = 20
- If a, b and c are 5, 6 and 7 then
abc = 210 & a+b+c = 18
- If a, b and c are 3, 7 and 10 then
abc = 210 & a+b+c = 20
- If a, b and c are 7, 15 and 2 then
abc = 24 & a+b+c = 24
- If a, b and c are 2, 5 and 21 then
abc = 210 & a+b+c = 28
From all of the above situation the least sum is 18 when a, b and c are 5, 6 and 7 respectively.