Respuesta :

lillyvela2323

Answer:

Time = T half–years , Rate = 5 % per half year

2

kushumkc15

Step-by-step explanation:

we know the formula:

  1. A=P(1+r/n)^nt ,where A is the amount , P is the principle , r is the rate , n is the number of times the interest compounded per unit time

68921=64000（1+0.05/2)^2t

or,68921/64000=（41/40)^2t

or, （41/40)^3=（41/40)^2t

or 2t=3

or, t=3/2 years