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podryga [215]
3 years ago
13

Place elementary school is raising money. they raise $90 a week. how long will it take to raise $900?

Mathematics
1 answer:
Korolek [52]3 years ago
7 0

Answer:10 weeks

Step-by-step explanation:

900 is goal

900/90 is 10 or 10 weeks

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After traveling exactly half of its journey from station A to station B, a train was held up for 10 minutes. In order to arrive
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Let's define variables:
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 60 / s + 60 / (s + 12) + 1/6 = 120 / s
 Where,
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 We take the positive root so that the problem makes physical sense.
 s = 60 Km / h
 Answer:
 
The original speed of the train before it was held up is:
 
s = 60 Km / h
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