| Show answer ans weir to the fuestion lu estion for school boys in akin making the statement lbs ibs ad being equal to 40 40 we throw the cd into an improper fraction mentally and then observe observed since 2 24 2 4 per cent are to be taken from it that isa is 21 14 1 4 parts from koo joo parts 87 34 3 4 91 parts wilt will remain which Is equal boxt to 4 now sow to sail ty fy the other condition we state the terms so as to obtain the present worth of 0 the sum indicated bythe by the first part ot of the statement discount bong being 1 Is per pe r cent ce nt in this solution 21 figures complete the work after the statement Is made mr air Green greenle lats ats solution requires soi SDI figures omitting those in tile the first statement making a difference of tards yards I 1 40 4 8 3 71 60 51 ads d ans ACS remarks by observing the operation of ca can celta niella ton ion lon in the above solution we and thai that I 4 times timis 40 da the left eft 0 of f the vertical line measures 8 times 60 on the cewill Ve will only use the d J mentally the 4 40 on the left and ind 8 60 on the right need not be wit tien for affet the Is made the answer is obtained simply ty by a operation by pursuing ng the course here hefe suggested much time will wili ie rained a great amount of useless labor labon dispensed lih ralth neith ith ind and the intellectual capacities of the learner ateo atto it at every stage tage of his progress G W M |
