| Date | May 2010 | Marks available | 2 | Reference code | 10M.1.sl.TZ1.12 |
| Level | SL only | Paper | 1 | Time zone | TZ1 |
| Command term | Calculate | Question number | 12 | Adapted from | N/A |
Question
Susi travels from Singapore to Thailand and changes 1500 Singapore dollars (SGD) to Thai baht (THB). The exchange rate is 1 SGD buys 21.03464 THB.
Susi leaves Thailand and travels to Indonesia. She has \(20\,000\) THB and uses these to buy Indonesian rupiah (IDR). The exchange rate is 3.28352 THB buys 1000 IDR.
Susi wants to find the approximate exchange rate between Singapore dollars and Indonesian rupiah and uses the exchange rates for Thai baht to do this.
Calculate the number of Thai baht Susi buys. Give your answer correct to the nearest baht.
Calculate the total number of Indonesian rupiah Susi receives, correct to the nearest thousand rupiah.
Calculate Susi’s exchange rate between Singapore dollars and Indonesian rupiah. Give your answer in the form 1 SGD buys x IDR, where x is given correct to the nearest rupiah.
Markscheme
1500 \( \times \) 21.03464 (M1)
\( = 31\,552\) (A1) (C2)
[2 marks]
\({\text{20 000}} \times \frac{{1000}}{{3.28352}}\) (M1)
\( = {\text{6}}\,{\text{091}}\,{\text{000}}\) (A1) (C2)
[2 marks]
\(\frac{{21.03464}}{{3.28352}} \times 1000\) (M1)
1 SGD = 6406 IDR (A1) (C2)
Note: Accept 6406.
[2 marks]
Examiners report
The vast majority of candidates answered at least part of this question with a significant number achieving full marks. A number did have a financial penalty applied for not giving their answers according to the specified accuracy level for the question. The most difficult part turned out to be (c) and a number of students didn’t attempt it at all. There were very few candidates who used the incorrect conversion.
The vast majority of candidates answered at least part of this question with a significant number achieving full marks. A number did have a financial penalty applied for not giving their answers according to the specified accuracy level for the question. The most difficult part turned out to be (c) and a number of students didn’t attempt it at all. There were very few candidates who used the incorrect conversion.
The vast majority of candidates answered at least part of this question with a significant number achieving full marks. A number did have a financial penalty applied for not giving their answers according to the specified accuracy level for the question. The most difficult part turned out to be (c) and a number of students didn’t attempt it at all. There were very few candidates who used the incorrect conversion.
