Math Word Problems Worksheet

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1.
Robert, who lives in the UK, travels to Belgium. The exchange rate is 1.37 euros to one British
Pound (GBP) with a commission of 3 GBP, which is subtracted before the exchange takes place.
Robert gives the bank 120 GBP.
(a)
Calculate correct to 2 decimal places the amount of euros he receives.
(3)
He buys 1 kilogram of Belgian chocolates at 1.35 euros per 100 g.
(b)
Calculate the cost of his chocolates in GBP correct to 2 decimal places.
(3)
(Total 6 marks)
2.
At what interest rate, compounded annually, would you need to invest $100 in order to have
$125 in 2 years?
(Total 4 marks)
3.
(a)
1 Brazilian Real (BRL) = 2.607 South African Rand (ZAR). Giving answers correct to
two decimal places,
(i)
convert 300 BRL to ZAR;
(ii)
find how many Real it costs to purchase 300 Rand.
Marilia deposits a gift of 150 Real from her aunt into a savings account. The savings account
pays an annual simple interest rate of r. The interest is added to the account at the end of each
month. After 9 months, the amount in the savings account was 158.10 Real.
(b)
Find the value of r.
(Total 6 marks)
IB Questionbank Mathematical Studies 3rd edition
1

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