If the crane operator works 30 years and the train engineer works 33 years, who makes the most lifetime income? How much more? Crane Operater|| Annual salary : 54,830|| Years of Education: 4
Train engineer|| Annual salary : 50,610 || Years of Education: 6

Step-by-step explanation:

The train eingineer.

Step-by-step explanation:

So, to find the lifetime income, we must multiply the annual income by the years of work.

So for the cran operator:

54,830*30

=

1,644,900

Now lets compare this to the train eingineer:

50,610*33

=

1,670,130

So looking at the two numbers:

1,670,130(train eingineer)>1,644,900(crane operator)

So the trian eignineer makes more than the crane operator.

Now lets find the amount.

To do this, lets subtract the larger value by the smaller value:

1,670,130-1,644,900

=

25,230

So the train eingineer made 25,230 more dollars than the crane operator.

Hope this helps!

i would say c is the best answer, hope it's right!

good luck! =)

cutie~

reduce the friction between its moving parts

step-by-step explanation:

in fact, by reducing the friction between the moving parts of the machine, it is possible to reduce the energy wasted due to this friction; therefore, more input energy is converted into useful work, and this will improve the efficiency of the machine.