So you're initial equation is

. Well since

, plug in 24 for the 1 in

. So

, and

so

.
Answer: -6 is your answer
Answer:
Weight of Train A = 454 tons
Weight of Train B = 35 tons
Step-by-step explanation:
It is given that:
Let,
A represent weight of Train A
B represent weight of Train B
According to given information:
A + B = 489 Eqn 1
A - B = 419 Eqn 2
Adding Eqn 1 and 2
A + B + A - B = 489 + 419
2A = 908
Dividing both sides by 2

Putting A = 454 in Eqn 1
454 + B = 489
B = 489 - 454
B = 35
Therefore,
Weight of Train A = 454 tons
Weight of Train B = 35 tons
About a 37% change
74 - 54 = 20
20/54 = <span>0.37037037037</span>
Answer:
ARE WE ADDING OR MUTILPLYING
Step-by-step explanation: