Question

Q2. A sum of money lent at simple interest amounts to Rs 14750 in 2 years and to Rs 15875 in 3 years. find the sum and rate of interest percent per annum​

Answer 1

Answer:

Amount after 2 years=RS 783

Amount after 3 years = RS 837

Therefore ,

S.I of 1 year = 783-837=RS. 54

S.I of 2 year = 54×2=RS. 108

principal sum=783- 108 = RS.675

Therefore,

S.I=PRt÷100

54=675×R×1÷100

R=54×100÷675

= 8%

Answer 2

Answer:

Explanation:

Amount after 2 years = 14750

Amount after 3 years =  15875

So, SI OF 1 YEAR = 15875 - 14750 = 1125

SI  OF 2 YEAR = 1125 * 2 = 2250

PRINCIPAL SUM FOR 2 YEARS = 14750 + 225O = 16000

SO,

SI= P*R*t / 100

2250=16000*r*1/100

R= 2250*100/16000

R=14.06%