Three computers can print out a task in 4 min, 6 min, and 12 min, respectively. how long would it take to complete the task with all three computers working?

12 min

Step-by-step explanation:

Because the other computers take less time you then pick the longest time because the 12 min one wouldn't be done in 4 or 6 mins

30.5*10=350$

you have to multiply the number without the decimal point then add it later but if its tenn u must move the place value of the decimal point 1 to the right.

150

step-by-step explanation:

(sorry i'm not typing it again just read the other two explanation sections i just typed it'll be the same.)