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AfilCa [17]
3 years ago
15

Two trains are 500 miles apart when they first enter a collision course. If, after two hours, the distance between them is 300 m

iles and one train goes 20 mph faster than the other, find the speed of the faster train.
Mathematics
2 answers:
deff fn [24]3 years ago
6 0
60 miles per hour. In two miles the sum of the distance the two trains traveled was 200 miles, you divide that by 2, the sum of the speed of the two trains is 100 miles per hour, now put the speed of the slow train as  x and the fast as x +20, the sum of x and x +20 is 100, so 2x + 20 =100, you subtract 20 from both sides, 2x = 80, divide by 2, x = 40, the problem asks for the speed of the fast train, so, x + 20 is 60.
Komok [63]3 years ago
5 0

Answer:

60

Step-by-step explanation:

slow train = x

fast train = x + 20

First we get the amount of distance both trains have covered

500 - 300 = 200

Next we have to divide it by the number of hours it took

200 ÷ 2 = 100

Then we write our equation

x + x + 20 = 100

2x + 20 = 100

Subtract 20 from both sides

2x = 80

Divide 2 from both sides and your left with

x = 40

Next we write our expression for the faster train

x + 20

Since we found that x is 40, we plug it into the expression which is

now an equation and we get...

40 + 20 = 60

Answer = 60 mph

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Answer:

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Step-by-step explanation:

4x+1=5

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Please answer!!!! please!!!!!!
olga55 [171]

The problem here is:  Too many words.

If you boil the problem down to the bare facts, the question is:

             "$210 is 15% of what number ?"

I'm pretty sure you can take it from there,
but here's the rest of it anyway:

                                                $210  =  15% of (March amount)

                                                $210  =  0.15 x (March amount)

Divide each side by  0.15 :     $1400 = March amount .

Check:
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3 years ago
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Answer:

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5 0
3 years ago
The figures are similar. Find the missing length.
saw5 [17]

Step-by-step explanation:

<h2>Answer:-</h2><h3>Given ,</h3>

The figure is Similar.

Observation:-

Similar figures have similar sides. If we see carefully in smaller triangle, 3 has been added to each side and they are similar. We need to find y.

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