Question

A tourist changed US$ 2200 into Singapore dollars at the rate of US$ 1 = S$ 1.78.
He spent S$ 2285 and changed the remaining money back to US$ at the rate of
US$ 1 = S$ 1.75. how many US$ did he get..

Answer 1

Answer:

US$ 932 .

Step-by-step explanation:

Exchange Rate: US$ 1 = S$ 1.78 .

US$ 2200 = S$ 1.78 X 2200 (Multiply by 2200) .

US$ 2200 = S$ 3916 .

Remaining money after he spent S$ 2285 =

S$ 3916 - S$ 2285 = S$1631 .

New Exchange Rate: US$ 1 = S$ 1.75 .

S$ 1 = US$  1/1.75 .

S$ 1631 = US$ (1/1.75) X S$1631 .

S$1631 =US$ 932 .