Question

niste muncitori au sapat 2km in 3 zile ...Stiind ca in primile 2 zile au sapat 1400 m, iar in ultimile doua 1200,afla cati m au sapat in fiecare zi

Answer 1

2km=2000 m in 3 zile

1 si 2 zi au sapat 1400m ⇒ 3 zi au sapat 2000m-1400m=600m

3zi = 600m

2zi + 3zi=1200m ⇒ 2zi+600m=1200m ⇒ 2zi =1200-600m=600m

2zi=600m

1zi+2zi=1400m ⇒ 1zi+600m=1400m ⇒ 1zi= 1400-600m=800m

1zi=800m

Answer 2

a+b+c=2000
a+b=1400
b+c=1200
a+2b+c=2600
a+b+c=2000
b=600
a=800
c=600