why they sum the 3 year in the first question and in the second not? these two question exactly the same but they has diffrent way of solving. pls write detailss

what is the diffrent between these two. I couldnt solve them using one way ..confusing Question A14 A project has the following cash flows. If the cost of capital is 6 %, what is the project's Payback Period? 2-2 Cash Flow Year 90-340 -$1,160 $440 1 $230 2 $340 $390 4 (a) (b) 3.92 years 3.72 years 3.38 years (e) (d) 3.12 years A project has the following cash flows. If the cost of capital is 8%, what is the projects Payback Period? Year Cash Flow 4000-2280 1720 $4,000 1720 $2280 1.84 PP = 1+ 2040 1720-2040 2 $2040 $1150 320-11 S0 &Jo 4 $680 320 &30 (a) (b) 1.84 years (c) 1.48 years 2.48 years (d) 2.84 years Nmn Heae the Solutien f your Candusien (MThe pacject's paybace faaiad CPe) isi feject $ 1160 Casta Sumof 3-Yer Cash low SH6 +$23 +$346 S1olo C3-y0or) $1,016 emainha pay hauk $150 $390 fast 3-ycor O38 Ay beck Peaiad Thendere, 3+ 0.38 3 38 yem Prject Caliulote Smlasly Pay be period Cep) othex Cast= $4.aoD Plow in Yeor S2280 Cash $ 2280 fanaininy pay ba $1726 fddi tioned ime past yers Sao43 1.84 yeres Pay haar farod. Therehar,t 0.8Y