Lee converted 500 u. s. dollars to 625 singapore dollars. if x represents u. s. dollars and s represents singapore dollars, which of these equations represents the relationship between the two currencies?

Given

Lee converted 500 U.S. dollars to 625 Singapore dollars.

x represents U.S. dollars and s represents Singapore dollars.

Find out equations represents the relationship between the two currencies.

To proof

As given in the question

x represents U.S. dollars and s represents Singapore dollars.

converted 500 U.S. dollars to 625 Singapore dollars

500 x = 625 s

x = 1.25 s

This shows that the U.S dollars is equal to 1.25 times of singapore dollars.

Hence proved

not only in mathematics, scientific proof also are required in the other field of science. also maths proofs are of particular structure, containing steps and logics. so proving is like doing science, it is science. that's why it is important to prove. 

an inaccurate proof leads to errors, or stating results that are not accurate.  which wil mess the probelm up you dont want this