Question

31. What will be the amount of 2560 at the rate of compound interest of 25% for 6 months, if interest calculated per quarter ? RRB NTPC (Phase-1) 2016 (1) 3320 (2) 8290 (3) * 2980 (4) 2890

11th - 12th Class

Maths

Solution

176

4.0 (1 ratings)

( begin{aligned} A &=(C I+P)=Pleft(begin{array}{l}1+R 100end{array}right)^{N} P &=₹ 2560, R=25 %, N=6 mathrm{mont} 28 end{aligned} ) Interest calculated per quaiter ( (u ). ( therefore N=6 / 3=(2) ). menths) ( C I+P=A=2560left(1+frac{25}{1600}right)^{2} ) [ begin{array}{l} A=2560left(frac{16+1}{16}right)^{2} A=2580left(frac{289}{256}right) A=2890 ₹ 9 text { ans: }(4) overline{2} 2890 end{array} ]