Currency exchange-rate comparison
Currency exchange-rate comparison
Secondary 2
8 marks
TGM Original Questions
Optional extension
A tourist exchanges \(14\,400\) baht at \(x\) baht per Singapore dollar. Later the rate is \((x+2)\) baht per dollar and he receives S$30 less.
- Write the first Singapore-dollar amount.[2]
- Write the later amount.[2]
- Form an equation and show that \(x^2+2x-960=0\).[2]
- Solve and find the later exchange rate.[2]
Solution:
Solution locked
680+ questions here come with free worked solutions. A free account saves your questions and progress; this one needs a course plan.
Create a free account to practise similar questions.
Answer:(a) S\(\(\dfrac{14400}{x}\) (b) S\(\)\dfrac{14400}{x+2}\) (c) \(x^2+2x-960=0\) (d) \(32\) baht per S$1.
Need help? Join our E-Maths tuition for O-Level success.
Learn more