4. The exchange rate between US dollars and Singapore dollars is as shown in the table below.
1.42
1.37
1 US dollar
[2]
(a)
How much US dollars would Johnson get if he changed S$2500?
(b)
Johnson spent 75% of the US dollars that he changed. How much US dollars did he have
left?
[1]
(C)
How much Singapore dollars would he get if he changed his remaining US dollars back to
Singapore dollars?
[2]
[1]