There are 30 actors in the school play. 60% of the actors are girls. How many actors are boys?

12

Step-by-step explanation:

If 60% of the actors are girls, then 60/100×30= 18 girls

Subtract 18 girls from the total number of actors

30-18= 12 boys

12

Step-by-step explanation:

If 60% are girls, 40% are boys

100 - 60 = 40

40% of 30

(40/100)×30

= 12

step-by-step explanation:

we can use this expression to calculate the energy gain as a particle moves with a field or the energy loss as it moves against it. (note that it is also used to define the electron-volt, a unit of energy equal to that gained by an electron as it falls through a pd of 1 v, i.e. w = 1 ev = 1.6 10-19 c 1 v = 1.6 10-19j).in fact this expression is really nothing more than the statement that potential is the potential energy per unit charge. in this case, v= w/qis simply stating that the change in potential energy(or work done) per unit charge is equal to the change in potential (or potential difference), v.student questions: uniform electric fields2electron beamcathode+5 kvanode0 v