Question

Opt muncitori ar executa o lucrare in 6 zile Doi muncitori se imbolnavesc la trei zile dupa ce a inceput lucrarea.In cate zile este finalizata lucrarea?

Answer 1

8m.............1l................6z
8m..............x.................2z

x=1*2/6= 1/3

1-1/3= (3-1)/3=  2/3

8m.............1l..................6z
6m.............2/3.................y

6/y= 6/8 * 1/2/3

6/y=6/8 * 3/2

6/y= 9/8

y=6*8/9

y=2*8/3

y=16/3= 5,3 zile  aproximativ 6 zile

Answer 2

8 muncitori.în 3 zile au facut jumatate din lucrare 8muncitori..........3 zile 6muncitori...........x zile X=8x3/6=4 zile 3+4=7 zile