Friends

Some friends had to collect the sum 72 EUR equally. If the three refused their part, others would have to give each 4 euros more. How many are friends?

Result

n =  9

Solution:

n=1 e=72(n-3).(e+4)=-152
n=2 e=36(n-3).(e+4)=-40
n=3 e=24(n-3).(e+4)=0
n=4 e=18(n-3).(e+4)=22
n=5 e=14.4(n-3).(e+4)=36.8
n=6 e=12(n-3).(e+4)=48
n=7 e=10.2857142857(n-3).(e+4)=57.1428571429
n=8 e=9(n-3).(e+4)=65
n=9 ****e=8(n-3).(e+4)=72
n=10 e=7.2(n-3).(e+4)=78.4
n=11 e=6.54545454545(n-3).(e+4)=84.3636363636
n=12 e=6(n-3).(e+4)=90
n=13 e=5.53846153846(n-3).(e+4)=95.3846153846
n=14 e=5.14285714286(n-3).(e+4)=100.571428571
n=15 e=4.8(n-3).(e+4)=105.6
n=16 e=4.5(n-3).(e+4)=110.5
n=17 e=4.23529411765(n-3).(e+4)=115.294117647
n=18 e=4(n-3).(e+4)=120
n=19 e=3.78947368421(n-3).(e+4)=124.631578947
n=20 e=3.6(n-3).(e+4)=129.2
n=21 e=3.42857142857(n-3).(e+4)=133.714285714
n=22 e=3.27272727273(n-3).(e+4)=138.181818182
n=23 e=3.13043478261(n-3).(e+4)=142.608695652
n=24 e=3(n-3).(e+4)=147
n=25 e=2.88(n-3).(e+4)=151.36
n=26 e=2.76923076923(n-3).(e+4)=155.692307692
n=27 e=2.66666666667(n-3).(e+4)=160
n=28 e=2.57142857143(n-3).(e+4)=164.285714286
n=29 e=2.48275862069(n-3).(e+4)=168.551724138
n=30 e=2.4(n-3).(e+4)=172.8
n=31 e=2.32258064516(n-3).(e+4)=177.032258065
n=32 e=2.25(n-3).(e+4)=181.25
n=33 e=2.18181818182(n-3).(e+4)=185.454545455
n=34 e=2.11764705882(n-3).(e+4)=189.647058824
n=35 e=2.05714285714(n-3).(e+4)=193.828571429
n=36 e=2(n-3).(e+4)=198
n=37 e=1.94594594595(n-3).(e+4)=202.162162162
n=38 e=1.89473684211(n-3).(e+4)=206.315789474
n=39 e=1.84615384615(n-3).(e+4)=210.461538462
n=40 e=1.8(n-3).(e+4)=214.6
n=41 e=1.75609756098(n-3).(e+4)=218.731707317
n=42 e=1.71428571429(n-3).(e+4)=222.857142857
n=43 e=1.67441860465(n-3).(e+4)=226.976744186
n=44 e=1.63636363636(n-3).(e+4)=231.090909091
n=45 e=1.6(n-3).(e+4)=235.2
n=46 e=1.5652173913(n-3).(e+4)=239.304347826
n=47 e=1.53191489362(n-3).(e+4)=243.404255319
n=48 e=1.5(n-3).(e+4)=247.5
n=49 e=1.4693877551(n-3).(e+4)=251.591836735
n=50 e=1.44(n-3).(e+4)=255.68
n=51 e=1.41176470588(n-3).(e+4)=259.764705882
n=52 e=1.38461538462(n-3).(e+4)=263.846153846
n=53 e=1.35849056604(n-3).(e+4)=267.924528302
n=54 e=1.33333333333(n-3).(e+4)=272
n=55 e=1.30909090909(n-3).(e+4)=276.072727273
n=56 e=1.28571428571(n-3).(e+4)=280.142857143
n=57 e=1.26315789474(n-3).(e+4)=284.210526316
n=58 e=1.24137931034(n-3).(e+4)=288.275862069
n=59 e=1.22033898305(n-3).(e+4)=292.338983051
n=60 e=1.2(n-3).(e+4)=296.4
n=61 e=1.18032786885(n-3).(e+4)=300.459016393
n=62 e=1.16129032258(n-3).(e+4)=304.516129032
n=63 e=1.14285714286(n-3).(e+4)=308.571428571
n=64 e=1.125(n-3).(e+4)=312.625
n=65 e=1.10769230769(n-3).(e+4)=316.676923077
n=66 e=1.09090909091(n-3).(e+4)=320.727272727
n=67 e=1.07462686567(n-3).(e+4)=324.776119403
n=68 e=1.05882352941(n-3).(e+4)=328.823529412
n=69 e=1.04347826087(n-3).(e+4)=332.869565217
n=70 e=1.02857142857(n-3).(e+4)=336.914285714
n=71 e=1.01408450704(n-3).(e+4)=340.957746479

Solution in text n =

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