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aleksklad [387]
3 years ago
15

How many fewer minutes does it take to drive 35 miles at 30 MPH than to drive the same distance at 25 mph

Mathematics
1 answer:
Anuta_ua [19.1K]3 years ago
3 0
To drive 35 miles at 30 mph takes (35/30) hour.
To drive 35 miles at 25 mph takes (35/25) hour.

The difference is  (35/25) minus (35/30).

In order to add or subtract fractions, they need a common denominator.
The smallest one available for this situation is 150 .

(35/25) = 210/150
(35/30) = 175/150

Now we can subtract:    (210/150) - (175/150) = 35/150 of an hour.
(35/150  hour) x (60 min/hr) = (35 x 60) / (150) min = 14 minutes.

==>  It's beginning to look like the answer is NOT 40minutes.
Let's do it again, with a less-elegant but more-intuitive approach:

Time to drive 35 miles at 30 mph = 35/30 = 1-1/6 hours = 70 minutes.
Time to drive 35 miles at 25 mph = 35/25 = 1.4 hours = 84 minutes.

<span>Time saved by driving at 30 mph instead of 25 mph = (84 - 70) = 14 minutes. </span>
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1) The normal room temperature is said to be about 20°C

2) 5 day is equivalent to 120 hr

3) 756 m³/s is equivalent 56000 L/s

4) It would take the snail 5 hours to crawl 75 m

<h3>What is an equation?</h3>

An equation is an expression that shows the relationship between two or more numbers and variables.

1) The normal room temperature is said to be about 20°C

2) 1 day = 24 hr

5 day = 5 day * 24 hr per day = 120 hr

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756 m³/s = 56 m³/s * 1000 L/m³ = 56000 L/s

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Find out more on equation at: brainly.com/question/2972832

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6 0
1 year ago
Complete the pattern using powers of 5
krok68 [10]
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1/5^0 = 1
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