Pregunta
If Peter travel at
a journey takes 40 minutes.
How long does the same joumey takes if he travel at
?
A. 100 minutes
B. 50 minutes
C. 32 minutes
D. 60 minutes
Decrease 90 in the ratio
If Peter travel at
|
How long does the same joumey takes if he travel at
|
A. 100 minutes |
B. 50 minutes |
C. 32 minutes |
D. 60 minutes |
Decrease 90 in the ratio
|
Ask by Clarke Franklin. in South Africa
Mar 09,2025
Solución de inteligencia artificial de Upstudy
Respuesta verificada por el tutor
Responder
The journey takes 50 minutes at 80 km/h.
Solución
To solve the problem, we need to determine how long the journey takes when Peter travels at
given that it takes
minutes at
.
Step 1: Calculate the distance of the journey
First, we need to find the distance of the journey using the speed and time at
.
- Speed
- Time
Using the formula for distance:
we can calculate the distance
:
Step 2: Calculate the time taken at
Now, we will find the time taken to cover the same distance
at
.
- Speed
Using the formula for time:
we can calculate the time
:
Step 3: Convert time to minutes
Now, we convert
from hours to minutes:
Conclusion
The time taken for the journey at
is
minutes.
Thus, the answer is B. 50 minutes.
Additional Task: Decrease 90 in the ratio
To decrease
in the ratio
, we first find the total parts of the ratio:
Now, we calculate the value of one part:
Now, we decrease
by
parts:
Finally, we subtract this decrease from
:
So, decreasing
in the ratio
gives us
.
Respondido por UpStudy AI y revisado por un tutor profesional
Como
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Mind Expander
To find out how long the journey takes at
, we first determine the distance. If Peter travels at
for 40 minutes, that translates to
hours, equal to
hours. Thus, the distance is:
Now, to find the time taken at
:
Converting that to minutes gives us
. So, the correct answer is B. 50 minutes.
Now, let’s address the ratio problem. To "decrease 90 in the ratio
", we can first divide the total ratio into parts. The total parts in the ratio
. Each part corresponds to:
Now, using the ratio
, we decrease:
Thus, decreasing
in the ratio
results in
for the first part, and
for the second part.

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