17(a)Percentages Currency Financial ArithmeticMedium3 marks
Sachin invests $7200 at a rate of 3% per year simple interest.
Find the total value of the investment at the end of 5 years.
Working
0 words
$
17(b)Percentages Percentage ChangeEasy2 marks
The mass of a large packet of rice is 30% greater than the mass of a small packet of rice.
The mass of the large packet of rice is 650 g.
Calculate the mass of the small packet of rice.
Answer
g
17(c)Exponentials LogarithmsMedium3 marks
In an experiment, Jenny starts with 4000 bacteria.
The number of bacteria is increasing exponentially at a rate of r% per day.
At the end of 6 days, the number of bacteria is 4598.