• 2.4.8-masala.
  • Buxoro davlat universiteti




    Download 180.07 Kb.
    bet73/78
    Sana15.06.2021
    Hajmi180.07 Kb.
    #15052
    1   ...   70   71   72   73   74   75   76   77   78
    Yechish:Mos ravishda uchchala quvur bo`sh hovuzni x,y,z soatda to`ldirsin. Masala shartiga ko`ra quyidagi sistemani tuzamiz:

    Uchchala tenglamani qo`shib yuborsak:



    ;

    Demak,uchchala quvur hovuzni 10 soatda to`ldiriladi.Javob:A



    2.4.7-masala.Ishchi har kuni kunlik rejada ko`rsatilganidan 25 ta detal ortiq yasab,uch kunda rejadagi 7 kunda mo`ljallanganidan 15 ta ortiq detal yasadi.Ishchi har kuni nechta detal yasagan?

    A)15 B)17 C)40 D)44



    Yechish:Ishchi har kuni rejadagiga ko`ra ta detal yasagan bo`lsin.Masala shartiga ko`ra

    3(x+25)=7x+15; 3x+75=7x+15; 4x=60; x=15

    Demak,rejadagiga ko`ra 25 ta detal ortiq yasagan va 15+25=40 ta.C

    2.4.8-masala.Kotlovan qazish uchun ikkita ekskavator ishga solindi.1-ekskavator soatiga 2-ekskavatorga qaraganda 40 kub m ortiq tuproq oladi.1-ekskavator 16 soat,2-ekskavator 24 soat ishladi. Shu vaqt ichida ikkala ekskavatorda 8640kub m tuproq qazib olindi.Har qaysi ekskavator soatiga necha kub metr tuproq qazib olgan?

    A)240;200 B)230;140 C)250;190 D)300;250





    Download 180.07 Kb.
    1   ...   70   71   72   73   74   75   76   77   78




    Download 180.07 Kb.

    Bosh sahifa
    Aloqalar

        Bosh sahifa



    Buxoro davlat universiteti

    Download 180.07 Kb.