Question

ain sum of money amounts to Rs.2800 in 10 years and Rs 3500 in 15 years at a certain rate of interest
compound annually.find principal
​

Answer 1

Answer:

A sum of money at simple interest amounts Rs. 2,800 in 10 years and Rs.3.250 in 15 years

∴ Interst paid in 5 years =3250−2800=450 Rupees

Annual Interest =450÷5=90 Rupees

Sumlentatthebegining=2800−90×2=2,620

Rupees

Rate of simple Interest =(90/2620)×100=3.44 percent

Step-by-step explanation:

hope helpful

Answer 2

Answer:

3500-2800=700 for 5 years its increased by 25%

now we have to know the principal

the amount to 2800 in 10 years so

efficient ratio for 10 years is

( 25+25+25×25/100)= 56.25%

if

156.25%--- 2800

100% ----- ?

answer --- 1792₹