1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Natali5045456 [20]
3 years ago
7

I was walking to the store at the same time as my friend Angela. No matter what, She has always gotten there twice as fast as me

. Half way to the store her friend picks her up on his scooter which was 10 times faster than me. She got there in 30 minutes. How long did it take for me to get there?
Mathematics
1 answer:
atroni [7]3 years ago
6 0
Let's call your speed "a"

her walking speed is then "2a"

and her friend's scooter speed is 10 a

let's also call the distance you need to walk "d"

so the time (t)you need is:

d/t=a
t=d/a

and her time is:
 t=\frac{d}{2} /2a+ \frac{d}{2} /10a
(half a distance with the speed of 2a and half a distance (d/2) with the distance of 10 a

now we count (we know that her time is 30 minutes)

30= \frac{d}{4a}+\frac{d}{20a} //multiply by 20a

600a= 5d+d
600a=6d/divide by 6
100a=d

Now, in order to calculate your time we need to calculate:

t=d/a

but we know how much is d now!
t=\frac{100a}{a}=100

which means that you need 100 minutes, or 1 h 40 minutes!!!

You might be interested in
Select the equivalent expression.
olasank [31]

Answer:

Answer Choice 'A' would be correct.

7 0
3 years ago
Read 2 more answers
A person's heart rate is 65 beats per minute at rest. It increases by 12 beats per minute for each of
Blababa [14]
The heartbeat per minute is 137 i used calculator
5 0
3 years ago
Which expression is equivalent to (x Superscript 27 Baseline y) Superscript one-third?
Kay [80]

Answer:

um i cannot understand that ok ?

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
How does the human body naturally create negative ions?
Mariulka [41]
Negative ions are oxygen atoms charged with an extra electron. They are created in nature by the effects of water, air, sunlight and the Earth’s inherent radiation. We dont really create them in the human body.
8 0
3 years ago
mary is putting 7,305 apples into boxes for shipping. each box can hold 96 apples.how many boxes of apples can she fill
kicyunya [14]

Answer:

76

Step-by-step explanation:

7305 divide  by 96 = 76

6 0
3 years ago
Other questions:
  • Which equation is equivalent to (2x^2+4x-7)(x-3)
    11·1 answer
  • Round 0.172 to the nearest hundredth.
    10·2 answers
  • Can someone please help me with this question
    7·2 answers
  • Nikita invests $2,000 into a bank account with a 4% annual interest rate. In seven years, which is the most expensive item she c
    8·1 answer
  • 10 = z/2 + 7<br> Help please..??
    5·2 answers
  • If a function is written in slope intercept form, y=mx+b, the x represents the ______.
    7·1 answer
  • Three times a number increased by 8 is at most 40 more than the number. Find the greatest value of the number.
    11·1 answer
  • How many solutions does this equation have?<br><br> 8n = 10 + 10n
    12·1 answer
  • 8+0=18<br> Only answer<br><br> Plz someone very intelligence
    7·2 answers
  • Help me please. I will mark brainliest!
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!