Question

Assume that at the current exchange rate, the british pound is worth $1.65 in american dollars. you have some dollar bills and several british pound coins. there are 17 items altogether, which have a total value of $18.30 in american dollars. how many american dollars and how many british pound coins do you have?

Answer 1

The first thing we must do for this case is to define variables.
 We have then:
 x = british pound
 y = dollar bills
 We have the following system of equations:
 x + y = 17
 1.65x + y = 18.30
 Resolving we have:
 x = 2
 y = 15
 Answer:
 you have:
 american dollars = 15 items
 british pound coins = 2 items