1/2 is 4/8
4/8+1/8+1/8=6/8
what's left is 2/8, which is 1/4
Option C, 36, because it is the LCM (Least common multiple)
DFC equals 180 because all triangles add up to 180. And their sides are the same so 180/3=60
Answer:
5 days
Step-by-step explanation:
This problem is an inverse proportion case. Having two variables: number of workers and time (in days); when we increase the number of workers, the time needed decreases; vice versa. Therefore, we can use the multiplication method: (workers * time) will always stay constant.
Let's say the time (in days) needed by the eleven workers is t,
5*20 = (3*10) + (14*t)
100 = 30+14t
70 = 14t
5 = t
It will take the eleven-workers 5 more days to finish the road.