7. The exchange rate between dollars and euros is $1 = €1.196.
a How many euros can be bought for $75?
b How many dollars can be bought for €85?
8. Calculate the purchase tax for these
purchases:
a Six bottles of Chateau Le Plonque at $5.88 exclusive
of 15% purchase tax.
b 40 litres of petrol at 83.6 cents per litre
inclusive of 15% purchase tax.
9. Jack needs to borrow $7500 to help buy a new
car. Calculate the interest charge for a loan over four years from these
lenders:
a A finance company, which charges 8% simple
interest.
b A bank, which charges 7.2% compound
interest.
10. How many mm3 are there in a cube of external surface
area 6 million km2?
Contributed by Jessica To
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