Question

aceste 2 probleme multumesc!!!!!​

Answer 1

ex 29

c1=30%
c2=15%
c3=25%

ms1=300g
ms2=600g
ms3=200g

mai intai trebuie sa aflam md1, md2 si md3
c1/100= md1/ms1

30/100= md1/300
facem produsul mezilor si produsul extremilor
100md1=30x300
100md1=9000|:100
md1=90g

c2/100=md2/ms2
15/100=md2/600
facem produsul mezilor si produsul extremilor
100md2=15x600
100md2=9000| :100
md2=90g

c3/100=md3/ms3
25/100=md3/200
facem produsul mezilor si produsul extremilor
100md3=25x200
100md3=5000| :100
md3= 50g

cf/100=md1+md2+md3/ms1+ms2+ms3
cf/100=90+90+50/200+300+600
cf/100=230/1100
facem produsul mezilor si produsul extremilor
1100cf=230x100
1100cf= 23 000| :1100
cf=20,9%


ex30

ms1=670g
c1=30%
md2=371g
c2=10%
cf=?

cf/100=md1+md2/ms1+ms2

trebuie sa aflam md1 si ms2

c1/100=md1/ms1
30/100=md1/670
facem produsul mezilor si produsul extremilor
100md1=670x30
100md1=20 100| :100
md1=201g

c2/100=md2/ms2
10/100=371/ms2
facem produsul mezilor si produsul extremilor
10ms2=100x371
10ms2=37 100| :10
ms2=3710g

cf/100=201+371/3710+670
cf/100=572/4380
facem produsul mezilor si produsul extremilor
4380cf=572x100
4380cf=57 200| :4380
cf=13,28