A fan consumes 1 unit of electricity in 3 hours. Rahul has 2 fans which consumed 21 units this month. For how many hours did he use the fan this month?

31.5 hours

Step-by-step explanation:

Given that 1 unit of electricity is consumed in 3 hours by 1 fan, it means that 2 fans will consume 1 unit in

= 3/2 hours

= 1.5 hours

If 2 fans consume 1 unit in  1.5 hours then 21 units will be consumed in

= 21 * 1.5/1

= 31.5 hours

It means he used the fans for 31.5 hours

b

Step-by-step explanation:

i just took the test

x =±sqrt(1/3)

step-by-step explanation:

x+4/6x=1/x

multiply each side by 6x to get rid of the fractions

6x*(x+4/6x)=1/x*6x

distribute

6x^2 +4 = 6

subtract 4 from each side

6x^2 +4-4 = 6-4

6x^2 =2

divide by 6

6x^2/6 = 2/6

x^2 = 1/3

take the square root of each side

sqrt(x^2) = ±sqrt(1/3)

x =±sqrt(1/3)

ok so the answer to your question is simple as long as you look at the different dimensions that contain the exemplary letters that combined in the right order give you words that eventually within the 5th dimension will conform and give you the correct answer to your question. hope i , stop looking at this easily, look at it with a spectral view.

step-by-step explanation:

told you