Step-by-step explanation:
1. Given data
Principal p = $300
Rate r = 2% = 2/100= 0.02
Time t= 1 year and 2 years
Final amount A =?
Applying the simple interest formula
For the first year
A= p(1+ rt)
A= 300(1 +0.02*1)
A= 300(1.02)
A= $306
After one year her will have $306
For the second year
Principal p= $306
A= 306(1 +0.02*2)
A= 306(1+0.04)
A= 306(1.04)
A= $318.24
After two years she will have $318.24
2. Given data
Cost of bicycle = $150
Depreciation = 15%
Firstly let us calculate 15% of $150
(15/100)*150 =0.15*150
= $22.5
Since the value depreciated
We will minus the the depression from the initial amount
New amount = 150-22.5=
$127.5
