Sam has already biked 1/4 of all the distance and 12 miles, and he still needs to bike 3/8 of the total distance and 9 miles. What's the total distance

let the total distance be x. So the equation goes as follows:-

(1/4)x+(3/8)x+9+12=x

On solving

(2x+3x+168)/8=x

5x+168=8x

168=3x

x=168/3

x=56km

Step-by-step explanation:

c. (3,2,6) is the answer.