Al asked in Science & MathematicsEngineering · 1 month ago

How Much Iron Oar Does John Need?

John needs 500 saw blades

70 saw blades require

       40 lengths of steel

and 30 buckets of steel powder

==================

We know that 

40 lengths of Steel require

       10 buckets of Iron oar

and 30 buckets of coal

30 buckets of Steel powder requires

30 buckets of iron oar

==================

Calculate the following

How much iron oar is needed to make 500 saw blades ?

How much coal is needed to make 500 saw blades ?

What is the formula?

Oar and coal are collected in 20 buckets per trip.

How many trips are needed?

6 Answers

Relevance
  • Tom
    Lv 7
    4 weeks ago

    Oars are usually made of WOOD and are used to propel a small boat.

  • Anonymous
    1 month ago

    Iron ORE! 

    An oar is something else. 

  • 1 month ago

    John needs no iron "oar." What he needs is iron ore.

    1 saw blade = 0.571428571 length of steel and 0.428571429 bucket of steel powder

    1 length of steel = 0.25 bucket of iron ore and 0.75 bucket of coal

    1 bucket of steel powder = 1 bucket of iron ore

    N = number of saw blades = 500 saw blades

    LS = lengths of steel = 40N/70 = 285.7142857 lengths of steel

    BSP = buckets of steel powder = 30N/70 = 214.2857143 buckets of steel powder

    BIO = buckets of iron ore = 10N/40 = 125 buckets of iron ore

    BC = buckets of coal = 30N/40 = 375 buckets of coal

    N = LS + BSP + BIO + BC

    N = 40N/70 + 30N/70 + 10N/40 + 30N/40

    Iron ore, 20 buckets per trip = 6.25 trips

    Coal, 20 buckets per trip = 18.75 trips

  • Joseph
    Lv 7
    1 month ago

    He needs two oars to row his boat.  If you can't master the difference between an oAR and oRE then you should stick to something more suited to your lack of abilities.

  • How do you think about the answers? You can sign in to vote the answer.
  • 1 month ago

    500 blades x 40 lengths / 70 blades = 286 lengths

    500 blades x 30 buckets powder / 70 blades = 214 buckets powder

    286 lengths x 10 buckets iron ore /40 lengths = 71.5 buckets iron ore

    286 lengths x 30 buckets coal /40 lengths = 214.5 buckets coal

    214 buckets powder x 30 buckets iron ore / 30 buckets powder = 214 buckets iron ore

    add up, iron oar = 71.5 + 214 = 285.5 buckets iron ore

            coal = 214.5 buckets

    total 500 buckets

    20 per trip means 25 trips

Still have questions? Get your answers by asking now.