How many pounds of chocolate worth $1.5 a pound must be mixed with 10 pounds of chocolate worth 80 cents a pound to produce a mixture worth $1 a pound?

12=12

Step-by-step explanation:

Let x = pounds of $1.5/lb chocolate needed

(cost of chocolate) / (pounds of chocolate) = cost per pound

1.5x+10*.8/x+10=1

1.5x+8=x+10

.5x=1

x=2

2 LBS needs to be checked:

1.5*2+10*.8/2+10=1

3+8/12=1

12/12=1

12=12

Hope this helps

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

i think the answer is b