simple but confused

[p.fery]

I have attached a file in here, i cant wrap myhead around it for some reason.

my working is times the tonnes but 1000 to turn them into killos, then devide by number of unis of electricty, add all the answers and it should be done, but its wrong, and i cant see why.

can anyone help?

 

[srmichael]

I have attached a file in here, i cant wrap myhead around it for some reason.

my working is times the tonnes but 1000 to turn them into killos, then devide by number of unis of electricty, add all the answers and it should be done, but its wrong, and i cant see why.

can anyone help?

The attachment is too small for me to see the full problem.

 

[DrPhil]

I have attached a file in here, i cant wrap myhead around it for some reason.

my working is times the tonnes but 1000 to turn them into killos, then devide by number of unis of electricty, add all the answers and it should be done, but its wrong, and i cant see why.

can anyone help?

Look at the units on the columns [we can't read them] - is one of them "electrical units/kg"? Once you have kg, you have to multiply by (electrical units/kg). When you multiply, then "kg" cancels in numerator and denominator, leaving "units of electricity."

If you either provide a larger picture, or tell us the headings of the columns, we would have a better idea what to do.