the true discount on Rs. 2562 due 4 months hence is Rs. 122. the rate percent is: (a) 12% (b) 15% (c) 18% (d) 20%
amt=present worth + true discount
pw=amt-td
2562-122
pw=2440
TIME=4MONTHS/12=1/3
SI=PTR/100
PTR=SI*100
R=(SI*100)/PT
R=(122*100)/2440*1/3
R=15%