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Len [333]
3 years ago
9

A number is divided in the ratio 7:4.If the first part is 105,find the number

Mathematics
1 answer:
Gre4nikov [31]3 years ago
3 0
105/7 = 15
15x4= 60

105:60

I think
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A train leaves boston and travels toward its destination at a speed of 60 mph. One hour later, an express train leaves Boston an
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Taking into account the supplied speeds, Boston is from the destination to:

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<h3>Calculation of the distance between Boston and Place of Destination</h3>

To identify the distance between Boston and the destination of the trains, it must be remembered that the <u>speed</u> mentioned for each one is a reference to the distance traveled per hour, therefore, after each hour, each train will travel :

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According to the information given, when the express train leaves, the regular train has a 60-mile lead, which is getting shorter hour by hour because the express train travels 20 miles per hour more than the normal train.

Therefore, in <u>three hours</u>, the express train would catch up with the regular train, calculating the distance thanks to the speed formula:

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And clearing the distance:

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Therefore, the destination would be <u>240 miles</u> from Boston, which would take four hours by regular train and three hours by express train.

If you want to learn more about Mathematics, you can visit the following link: brainly.com/question/24600056

3 0
2 years ago
2(2q + 1.5) = 18 - 9​
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Answer:

q= 3/2   which equals     1 1/2

Step-by-step explanation:

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