Question

please answer the questions please and explain it also! if you want brainlist so answer questions please! ​ ​

Answer 1

Step-by-step explanation:

First I am solving q3

A=P(1+r/100)^n

1852.5=1600(1+5/100)n

1852.5=1600*(21/20)^n

1852.5/1600=21/20^n

1.15= (1.05)^n

(1.05)^3=(1.05)^n

n=3

q4

Depreciation = A=P(1-r/100)^n

7290=10000(1-r/100)^3

Now we can transpose 10000 to 7290

Then 729/1000=(1-r/100)^3

(9/10)^3=(1-r/100)^3

Cube can be cancelled

9/10 = 1-r/100

r/100=1-9/10

r/100=1/10

r=10%

Hope it helps