Question

10) A water tank with 3 cm thick walls is filled with
1,04,000 litres of water. Its length and breadth are
806 cm and 656 cm respectively. What is the
height of the water in the tank?​

Answer 1

Given, maturity value =66,250, monthly installment =2,500, n=2 years =2×12=24 months

Interest =  

2400

Pn(n+1)r

​  

 

=  

2400

255×24×25×r

​  

 

=625r

Therefore, amount =(Pn+625r)

⇒66,250=(2500×24+625r)

⇒66,250=60,000+625r

⇒6250=625r

⇒r=10%