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8. An American tourist changed US$700 into TT$ at a rate of US$1.00 = TT$4.26. She spent in Trinidad $1302. She then travels to Barbados where she changes her TT$ to BDS$, the exchange being TT$2.10 = BDS$1.
(a)How much TT$ did she receive?
(b) How much BDS$ did she receive?
(9) Mr. Khan bought a refrigerator for$256,000. Calculate the selling price of the refrigerator if he adds a profit of 20%. A 10% discount is offered for cash, calculate its cash price?
10) Solve the pair of equations 3x + y = 18
2x – y= 7
Sagot :
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