max cycles at a speed of 15 mph. He cycles 12 miles from home to school. If he increases the sped by 5 mph, how much faster will he reach his school?
(if you answer the question please show how you got it, please.)

Answers

Answer 1

Answer:
First of all, you're not really asking "How much faster ?".
That would be "5 mph faster".
You're really asking "How much sooner ?"

At 15 mph, the trip takes him 12/15 = 4/5 hour.

At 20 mph, the trip takes him 12/20 = 3/5 hour.

The time saving is (4/5 - 3/5) = 1/5 hour .

= 12 minutes

Notice that by changing to 5/4 of his original speed,
he changed the trip to 4/5 of the original time.
It always works out like that ... reciprocally.

Answer 2

Answer: the cyclist would be going 20 mph after increasing his speed by 5 mph. but we would need to know how fast it took him to get to school when he was going to school to figure out how long it would take him to get to school. the distance 12 miles would not get shorter with max going faster, it would stay the same. so you would need to know how long it was taking him to get to school before i could do the math to figure out how fast he would get to school with his increased speed.

Related Questions

Tickets for the fall dance are 5$ per person or $8 for couples. In order to cover expenses, at least $1200 worth of tickets must be sold. Write an inequality that represents this situation.
The bookstore has 6 shelves of books about animals there are 30 books on each shelf how many books animals does the bookstore have? Shade squares to make a diagram to show how youcan use the Distributive Property to find the number ofbooks about animals in the bookstore.
Need help please(•-•)/ \ | |
Mason opens a savings account by making a $165.85 deposit. Every week, he deposits another $20.50 in the account. The following expression shows the amount of money that will be in the account x weeks after Mason opens it.165.85 + 20.5x How much money will be in the account after 10 weeks?
The chart below contains the results of a survey in which students were asked about their cell phone plan.Cell Phones PlansPlanNo cell phoneVoice onlyVoice and textingVoice, texting, and dataStudents2014124What percent of the students surveyed have a phone plan with texting?

57% of 109 is what number? plz help

Answers

I believe the answer is 62.13.
57% of 109
57÷100=0.57
0.57×109
=62.13
=$62.13
or
you can do 57/100×109 and you will get 62.13

You know that 68% of a number y is 119 Please i beg for help

Answers

y x 68/100 = 119
rearrange for y

(times by 100)
y x 68 = 11900
(divide by 68)
y = 175

therefore the number was 175.

I think the answer is 175 I hope this helps you

3/4x-9=27 solve this equation

Answers

3x/4-9=27
Common denominator is 4
4(3x/4-9)=4•27
Distributing 4 through parentheses
4•3x/4-(4•9)=(4•27)
3x-4•9=4•27
3x-36=108 add 36
3x=108+36
3x=144 divide by 3
/3 /3
x=144/3
x=48•3/3
x=48 solved for x

One-half cup of black beans provides 15% of the potassium you need daily. You must get the remaining 2890 milligrams from other sources.

Answers

Answers:

The amount of potassium from black beans is 510 mg

The total amount of potassium needed daily is 3400 mg

Explanation:

1- getting the total amount of potassium needed daily:

Assume that the total amount needed daily is x

We know that:

We can get 15% of the potassium needs from half a cup of black beans.

This means that:

remaining amount = 100% - 15% = 85%

We are given that the remaining amount is 2890 mg, therefore:

85% x = 2890 mg

0.85x = 2890 mg

x = 3400 mg of potassium

2- getting the amount of potassium in black beans:

We know that:

one half of a cup provides 15% of the daily needs

We have calculated that:

Total daily need = 3400 mg

Therefore:

half a cup would provide = 15% * 3400

half a cup would provide = 0.15 *3400

half a cup would provide = 510 mg of potassium

Hope this helps :)

not 100% sure on what you are asking but i think i got it. If you are looking for the amount of K (potassium) in milligrams then you need to first know that 85%=2890 milligrams. if you divide 2890 by 17 you get 5%=170 mg. multiply this by 3 to get 15%=510 mg. so one half cup of black beans has 510 milligrams of K. the total amount of K needed daily is 510+2890=3400 milligrams or 34 grams

The two tables below show the amount of tip, y, included on a bill charging x dollars. A 2-column table with 3 rows titled Restaurant A. Column 1 is labeled x with entries 10, 20, 30. Column 2 is labeled y with entries 1, 2, 3. A 2-column table with 3 rows titled Restaurant B. Column 1 is labeled x with entries 25, 50, 75. Column 2 is labeled y with entries 5, 10, 15. Which compares the slopes of the lines created by the tables? The slope of the line for Restaurant B is One-fifth times greater than the slope of the line for Restaurant A. The slope of the line for Restaurant B is 2 times greater than the slope of the line for Restaurant A. The slope of the line for Restaurant B is 5 times greater than the slope of the line for Restaurant A. The slope of the line for Restaurant B is 10 times greater than the slope of the line for Restaurant A.