Question

what sum of money amount to rupees 2025 in 3 months at 5% simple interest per annum​

Answer 1

Answer:

A=P+i*n

5%pa= 5/12 per month

so 1200 fetches an interest of ₹ 60 per year

=₹5 / month

Step-by-step explanation:

so in 3 months int=15 on ₹1200

₹30 on ₹2400 gives an amount of 2430 where int is (1/80) of principal

so[1+(1/80)]*p=2025

or (81/80)*p=2025

so p=2025*80/81

=2000 ANSWER

Answer 2

Answer:

let P be the principal

Given are as follows :-

Rate = 5%pa

Time = 3months

Amount = 2025

Firstly we change time into years

As we in 12 month = 1 year

3month = 3 / 12 = 1/4 years

interest = Rs 2025 - P

2025 - P = P* 1/4 * 6/ 100

2025 - P = 0.25 *6 / 100

2025 - p = 1.5 / 100

2025 = 1.5/100 +P

2025 = 150 p / 100

cross multiply

150P = 2025 * 100

P = 202500/ 150

P = 1350

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Step-by-step explanation: