Tommy can exchange 8 euros for 11 dollars.
2 answers:
Answer: The required number of dollars that Tommy get with 12 euros is 16.5 dollars.
Step-by-step explanation: Given that Tommy can exchange 8 euros for 11 dollars.
We are to find the number of dollars that Tommy get with 12 euros at the same rate.
We will be using the UNITARY method to solve the problem.
We have
Number of dollars that Tommy get with 8 euros = 11
So, number of dollars that Tommy get with 1 euro will be
Therefore, the number of dollars that Tommy get with 12 euros is given by
Thus, the required number of dollars that Tommy get with 12 euros is 16.5 dollars.
You might be interested in
See attached for a sketch of some of the cross sections.
Each cross section has area equal to the square of the side length, which in turn is the vertical distance between the curve y = √(x + 1) and the x-axis (i.e. the distance between them that is parallel to the y-axis). This distance will be √(x + 1).
If the thickness of each cross section is ∆x, then the volume of each cross section is
∆V = (√(x + 1))² ∆x = (x + 1) ∆x
As we let ∆x approach 0 and take infinitely many such cross sections, the total volume of the solid is given by the definite integral,
