Explanation of Duplicate Ratio
Firstly, let us understand what duplicate ratio means. Duplicate ratio is a ratio that is obtained by multiplying each term of the original ratio by the same number. For example, if the original ratio is a:b, then the duplicate ratio would be 2a:2b, or 3a:3b, or any other multiple of a and b.
Applying Duplicate Ratio in the Given Problem
Now, let's apply the concept of duplicate ratio in the given problem. We are given that:
2s:3t is the duplicate ratio of 2s-p:3t-p
This means that:
2s/3t = (2s-p)/(3t-p)
We can cross-multiply to get:
2s(3t-p) = 3t(2s-p)
Simplifying this equation, we get:
6st - 2sp = 6st - 3tp
Canceling out the common terms, we get:
-2sp = -3tp
Dividing both sides by -p, we get:
2s/3t = 3t/2s
Now, we can cross-multiply to get:
4s^2 = 9t^2
Taking the square root of both sides, we get:
2s/3t = 3t/2s = 3/2
Therefore, the duplicate ratio of 2s-p:3t-p is 3:2.
Conclusion
In conclusion, we can say that the duplicate ratio of 2s-p:3t-p is 3:2, which is obtained by dividing the terms 2s and 3t by the same number. This problem demonstrates the use of basic algebraic operations in solving ratio problems.