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Friends
Some friends had to collect the sum of 72 EUR equally. If the three refused their part, others would have to give each 4 euros more. How many are friends?
Correct answer:
n =
9
Step-by-step explanation:
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=10.285714285714
(n-3).(e+4)=57.142857142857
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=6.5454545454545
(n-3).(e+4)=84.363636363636
n=12
e=6
(n-3).(e+4)=90
n=13
e=5.5384615384615
(n-3).(e+4)=95.384615384615
n=14
e=5.1428571428571
(n-3).(e+4)=100.57142857143
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=4.2352941176471
(n-3).(e+4)=115.29411764706
n=18
e=4
(n-3).(e+4)=120
n=19
e=3.7894736842105
(n-3).(e+4)=124.63157894737
n=20
e=3.6
(n-3).(e+4)=129.2
n=21
e=3.4285714285714
(n-3).(e+4)=133.71428571429
n=22
e=3.2727272727273
(n-3).(e+4)=138.18181818182
n=23
e=3.1304347826087
(n-3).(e+4)=142.60869565217
n=24
e=3
(n-3).(e+4)=147
n=25
e=2.88
(n-3).(e+4)=151.36
n=26
e=2.7692307692308
(n-3).(e+4)=155.69230769231
n=27
e=2.6666666666667
(n-3).(e+4)=160
n=28
e=2.5714285714286
(n-3).(e+4)=164.28571428571
n=29
e=2.4827586206897
(n-3).(e+4)=168.55172413793
n=30
e=2.4
(n-3).(e+4)=172.8
n=31
e=2.3225806451613
(n-3).(e+4)=177.03225806452
n=32
e=2.25
(n-3).(e+4)=181.25
n=33
e=2.1818181818182
(n-3).(e+4)=185.45454545455
n=34
e=2.1176470588235
(n-3).(e+4)=189.64705882353
n=35
e=2.0571428571429
(n-3).(e+4)=193.82857142857
n=36
e=2
(n-3).(e+4)=198
n=37
e=1.9459459459459
(n-3).(e+4)=202.16216216216
n=38
e=1.8947368421053
(n-3).(e+4)=206.31578947368
n=39
e=1.8461538461538
(n-3).(e+4)=210.46153846154
n=40
e=1.8
(n-3).(e+4)=214.6
n=41
e=1.7560975609756
(n-3).(e+4)=218.73170731707
n=42
e=1.7142857142857
(n-3).(e+4)=222.85714285714
n=43
e=1.6744186046512
(n-3).(e+4)=226.97674418605
n=44
e=1.6363636363636
(n-3).(e+4)=231.09090909091
n=45
e=1.6
(n-3).(e+4)=235.2
n=46
e=1.5652173913043
(n-3).(e+4)=239.30434782609
n=47
e=1.531914893617
(n-3).(e+4)=243.40425531915
n=48
e=1.5
(n-3).(e+4)=247.5
n=49
e=1.469387755102
(n-3).(e+4)=251.59183673469
n=50
e=1.44
(n-3).(e+4)=255.68
n=51
e=1.4117647058824
(n-3).(e+4)=259.76470588235
n=52
e=1.3846153846154
(n-3).(e+4)=263.84615384615
n=53
e=1.3584905660377
(n-3).(e+4)=267.92452830189
n=54
e=1.3333333333333
(n-3).(e+4)=272
n=55
e=1.3090909090909
(n-3).(e+4)=276.07272727273
n=56
e=1.2857142857143
(n-3).(e+4)=280.14285714286
n=57
e=1.2631578947368
(n-3).(e+4)=284.21052631579
n=58
e=1.2413793103448
(n-3).(e+4)=288.27586206897
n=59
e=1.2203389830508
(n-3).(e+4)=292.33898305085
n=60
e=1.2
(n-3).(e+4)=296.4
n=61
e=1.1803278688525
(n-3).(e+4)=300.45901639344
n=62
e=1.1612903225806
(n-3).(e+4)=304.51612903226
n=63
e=1.1428571428571
(n-3).(e+4)=308.57142857143
n=64
e=1.125
(n-3).(e+4)=312.625
n=65
e=1.1076923076923
(n-3).(e+4)=316.67692307692
n=66
e=1.0909090909091
(n-3).(e+4)=320.72727272727
n=67
e=1.0746268656716
(n-3).(e+4)=324.77611940299
n=68
e=1.0588235294118
(n-3).(e+4)=328.82352941176
n=69
e=1.0434782608696
(n-3).(e+4)=332.86956521739
n=70
e=1.0285714285714
(n-3).(e+4)=336.91428571429
n=71
e=1.0140845070423
(n-3).(e+4)=340.95774647887
n
e
=
7
2
(
n
−
3
)
(
e
+
4
)
=
7
2
n
=
9
e
=
8
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Some friends had to collect the sum of 72 EUR equally. If the three refused their part, others would have to give each 4 euros more. How many are friends?
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You need to know the following knowledge to solve this word math problem:
algebra
quadratic equation
equation
integer equation
system of equations
basic functions
reason
Units of physical quantities:
money
Grade of the word problem:
practice for 14 year olds
high school
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