Solve for Usage using the formula,

Usage = Present Reading - Previous Reading

Note: units of measurement is kWh and not kph, kph is a unit of speed/velocity

#13.

Usage = Present Reading - Previous Reading

Usage = 4225 - 2583

Usage = 1642 kWh

#14.

Usage = Present Reading - Previous Reading

Usage = 3767 - 2412

Usage = 1355 kWh

#15.

note, for #15 there's a typo, Present reading is always equal or greater then previous reading,

Usage = Present Reading - Previous Reading

Usage = 4217 - 4103

Usage = 114 kWh

* as always, double check my answers for errors or carelessness.

#NO TO GUESS GUESS, TSAMBA TSAMBA & COPY PASTE SOLUTION!

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