Saplings 31521

The orchard was planted over three years. In the second year, 15% more saplings were planted than in the first year. In the third year, 40% fewer saplings were planted than in the first and second years combined. A total of 4,128 saplings were planted. How many saplings were planted in each year?

Correct answer:

a =  1200
b =  1380
c =  1548

Step-by-step explanation:

r1=100%+15%=1+10015=1.15 r2=100%40%=110040=0.6  b=r1 a c=r2 (a+b) a+b+c=4128 b=1.15 a c=0.6 (a+b) a+b+c=4128  1.15ab=0 0.6a+0.6bc=0 a+b+c=4128  Row21.150.6 Row1Row2 1.15ab=0 1.122bc=0 a+b+c=4128  Row31.151 Row1Row3 1.15ab=0 1.122bc=0 1.87b+c=4128  Pivot:Row2Row3 1.15ab=0 1.87b+c=4128 1.122bc=0  Row31.869565221.12173913 Row2Row3 1.15ab=0 1.87b+c=4128 1.6c=2476.8  c=1.62476.8=1548 b=1.869565224128c=1.8695652241281548=1380 a=1.150+b=1.150+1380=1200  a=1200 b=1380 c=1548

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