Question

Taryn borrowed rs 3000 at the rate of 6% per annum after 4 years he returned to 3200 and a watch find the cost of watch​

Answer 1

Answer:

Rs520

Step-by-step explanation:

Given,

Principal = Rs3000

Rate = 6%

Time = 4 years

To Find,

Cost of watch if it is returned with 3200 rupees.

Procedure,

First, we need to find the Simple Interest.

$SI = \frac{p \times r \times t}{100}$

$SI= \frac{3000 \times 6 \times 4}{100}$

$SI= \frac{72000}{100}$

$SI= 720$

We got SI = 720

Now, we need to find Amount.

$amount = principal + simple \: interest$

$A = 3000 + 720$

$A = 3720$

Amount = Rs 3720

Now, we need t find the cost of the watch.

$cost \: of \: watch = 3720 - 3200$

$= 520$

Therefore, the cost of the watch is Rs.520

Answer 2

Step-by-step explanation:

principal =3000

Rate=6%

time =4 yrs

simple interest - principal *rate*time/100

s.i=3000*6*4/100

simple interest -720

cost of watch = 3200-720=2480