Caroline bought 20 shares of stock at 101/2, and after 10 months the value of the stocks was 111/4. if caroline were to sell all her shares of this stock, how much profit would she make? a. $10 b. $15 c. $225 d. $210

$15 profit would  Caroline make .

Option (B) is correct .

Step-by-step explanation:

As given

i.e

i.e

Thus

Profit = (Cost of the 20 stock after 10 month - Cost of the 20 stock before 10 month ) × Total number of shares .

L.C.M of (4,2) = 4

Profit = 3 × 5

Profit = $15

Therefore the $15 profit would  Caroline make .

Option (B) is correct .

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.