Question

If you have a device that has an energy efficiency of 0.7 and you put in 150 units of energy, how many units of useful energy will you get out of it?
Select one:
a. 0.004
b. 105
c. 214

Answer 1

105

Answer 2

you have to multiply 0.7 by 150 to get your answer

Answer 3

i multiplied them and got 73.5, that cant be right.

Answer 4

um, are you sure? because i did 0.7 times 150 and i got 105

Answer 5

alright, your probably right. i suckk at math anyway.

Answer 6

cool thanks.

Answer 7

yes he is right i got 150 from multiplying 0.7 by 150

Answer 8

omg. okk(:

Answer 9

lol