path: root/3769/CH25/EX25.19/Ex25_19.sce

clear
//Given
l=1620.0
l1=405.0

//Calculation
//
T=(1/l)+(1/l1)
t=log(4)/T

//Result
printf("\n The time during which three-fourths of a sample will decay is %0.0f  years",t)