Question

20. A Sum
of money
becomes RS 3000 in 2 years
and RS 3250 in 3 years, find
the principal
and the rate
of
interest.​

Answer 1

Answer:

The money which we deposit in or the lower from the bank or the money learned called the principal.Rate of interest: The interest paid on Rs.100 for one. ... Therefore T = (100 × S.I)/(P × R) = (100 × 80)/(500 × 3) = 2 years ... Calculate Simple Interest 3. In how many years will a sum double itself at 8 % per annum?

Step-by-step explanation:

A sum of money at simple interest amounts to Rs. 2240 in 2 years and to Rs. 2600 in 5 years. ... SI for 5 years = (2205/3)*5 = 3675 [so that we can get principal amount after deducting SI] ... Find the simple interest on Rs 7000 at 50/3 % for 9 months ... Rs. 800 becomes Rs. 956 in 3 years at a certain rate of simple interest.

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Answer 2

Answer:

P = Rs. 2500

R = 10% p.a

Step-by-step explanation:

According to the question,

Principal+S.I for 3 years = Rs. 3250 ....(i)

Principal+ S.I for 2 years = Rs. 3000 ....(ii)

From eq. ii and i, we get,

S.I for 1 year = Rs. 250

S.I for 2 years = Rs. 500

Principal = Rs. 3000-500

= Rs. 2500

Rate = (S.I*100)/(P*T)

= 50000/5000 % p.a

= 10% p.a

Hope this helps.