647. One-sixth of a certain number is four more than one-twelfth the number. Find the number. a. 6 b. 18 C. 36 d. 48
d. 40.

Step-by-step explanation:

let number be x

1/6x - 1/12x= 4

1/12x=4

cross multiply

x= 12 x 4

x= 48

-81 -56 -27 0 81

step-by-step explanation:

twenty-six miles over two gallons because the proportion for the original 13 miles to one gallon would be written 13/1 and, doing the same thing to the top and bottom, i multiplied by 2 and got 26/2