Question

A certain amount from rs 5000/-is lent at 10%interest per annum while the remaining amount is lent at 20%interest per annum. In the next years an amount of rs. 1700/-is earned as simple interest on these two amount. What is the amount that has been lent is 10%interest per annum

Answer 1

Answer:

let x is the amout that has been lent at 10% interest/annum

then, x×10×2÷100 + (5000-x)×20×2÷100 = 1700

(NOTE UNDERSTAND ABOVE LINE CAREFULLY ]

x/5+2/5(5000-x) = 1700

x/5 +2000 - 2/5x =1700

2000-x/5 = 1700

x/5 = 2000 - 1700

x/5 = 300

x = 1500