Can any one give me hint to this 3(n+4]=27(2n)

n = 4/17

Step-by-step explanation:

3(n + 4) = 27(2n)

distribute thru the parenthesis

3(n) + 3(4) = 27(2n) =

3n + 12 = 54n move the 3n across the = sign, and when u move a term across the equal sign to the other side, u change the sign

12 = 54n - 3n

combine like terms

12 = 51n

divide both sides by 51

12/51 = (51/51)n

12/51 = 1n or just 12/51 = n

reduce

4/17 = n <

and u can check ur answer by subbing it back into the original equation to see if it is true.

3(4/17 + 4) = 27(2*4/17)

3(4/17 + 68/17) = 27(8/17)

3(72/17) = 216/17

216/17 = 216/17 (correct)...so it checks out

distance covered by pamela in 9 l of fuel = 99km

let us apply unitary method here.

distance covered by pamela in 1 l of fuel =99/9 =11 km

now let us find distance covered by pamela if she has 12 l of fuel.

distance covered in 12 l = distance covered in 1 l of fuel * 12

we know that distance covered by here in 1 l is 11 km.

so distance covered in 12 l of fuel = 11*12 = 132 km.