Let be the volume of 20% solution, the volume of the 60% solution. We want a total volume of 400 mL in the final mixture, so
Each mL of either solution will contribute a corresponding concentration, and in the final mixture we want the 400 mL to have a 40% concentration, which means we should also have
Solve the system and we get .
It would be 10^13 which would equal 10,000,000,000,000
Speed of Tim = 60 miles/hour
Speed of Joe = 45 miles/ hour
Distance = Speed x Time
A 3 hours, Tim had travelled 60 x 3 miles = 180 miles.
At 3 hours, Joe had travelled 45 x 3 miles = 135.
The difference between the distances is 45.
Therefore, they were 45 miles apart after 3 hours.
I hope this is right.
1. Construct a circle of arbitrary radius (r₁) with center at point P (blue circle)
2. Mark the points of intersection of the circle with the line AB (points E and D)
3. Construct two circles of identical radii (r₂) with centers at points E and D (green and red circles). Notice: r₂ > r₁
4. Draw a segment through the intersection points of the green and red circles.
Answer:
Leo is 1 year old.
Step-by-step explanation:
Given:
Lily's age = 5
Leo's age =
we need to find the Leo's age.
Solution:
Leo's age =
where x ⇒ Lilly age
But Lilly's age = 5 years (given)
So we will substitute the value of x as 2 in Leo's age expression.
On Substituting we get;
Leo's age =
Hence Leo is 1 year old.