Question

Determine the principal that will earn cash 100 as simple interest in 2 years at 5% p.a also find the amount after 2 years.​

Answer 1

Given:

• Simple Interest = 100 rupees
• Time = 2 years
• Rate of interest = 5%

To Find:

• Amount = ?
• Principal = ?

Solution:

Let's understand

Here,S.I is given 100 rupees ,time is 2 years and rate is 5 %and we have to find amount and principal.

We know that,

$\large{\sf{\fbox{\green{Principal = {\frac{S.I × 100}{R × T}}}}}}$

Now, put the value

$\sf \implies \: principal \: = \frac{100 \times 100}{5 \times 2} \\ \\ \sf \implies \: principal = 1000 \: rupees$

Therefore,Principal is 1000 rupees.

Now, we have to find Amount.

We know that,

$\large{\sf{\fbox{\green{Amount=Simple\: Interest-Principal}}}}$

Now,put the values

$\sf \implies \: amount = 1000 + 100 = 1100\: rupees$

Hence, Amount is 1100 rupees.

Answer 2

Step-by-step explanation:

simple interest=Rs100

time=2years

rate=5%

principal=100×100/2×5

1000

amount=principal+simple interest

1000+100=Rs1100