Question

What principal will amount to rs 2640 in 2 years at 10% p.a intrest?

Answer 1

As we know,
Amount = Principal + Simple Interest
and, SI = PRT/100
i.e. SI = P *10*2 /100 = P/5.
Now,
2640 = P + P/5
P = 5*2640 /6 = 2200.
So, the principal is Rs 2200.

Hope you will find it helpful....
MARK IT AS BRAINLIEST.

Answer 2

Answer:

Amount =Principal +simple interest and SI=PRT/100

i.e. SI=P *10*2/100= P/5

Now,

2640=P+P/5

P=5*2640/6=2,200

So,the principal is rupees 2,200