15:25 = 3:5
simply divide 15 and 25 both by 5 to get 3:5.
It should be 1/8 because if she takes 1/2 and they eat 3/8 you make the denominator the same and you subtract it and get 1/2 I hope I broke it down so you can understand
I think it's the first 7.
I hope this helps :-)
Answer:
x1 = 275 miles (shorter)
x2 = 318 miles (longer)
Step-by-step explanation:
Let
x1 = be the shorter route
v1 = speed of the car in the shorter route
t1 = time it took to cover shorter route
x2 = the longer route
v2 = speed of the car in the longer route
t2 = time it took to cover longer route
x1 + 43 = x2 (1)
v2 = v1 -2 (2)
v2 = x2/t2 = x2/6
v1 = x1/t1 = x1/5
This means that
v2 = v1 -2 =>
x2/6 = x1/5 -2
The system of equations results
a. x1 -x2 = -43
b. x1/5 - x2/6 = 2
Solving this system of equations, we find that
x1 = 275 miles
x2 = 318 miles
15x over 2 dont know how to do it on computer
