20km/40min=0.5km per minute
6km/120min=6/120=1/20 or 0.05km per minute

0.5km/min is 10 times faster then 0.05km.min

His first rate exceeded his second rate by 10 times, or 1000%

5 0

2 years ago

1. What percent of 56 is 14?

tekilochka [14]

Answer:

Percentage Calculator: 14 is what percent of 56? = 25.

Step-by-step explanation:

3 0

2 years ago

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Which one is it........

ruslelena [56]

$\begin{cases}4(x+y)=2x+12\\4x+y=x+8\end{cases}\\\\\\
\begin{cases}4x+4y=2x+12\quad|-2x\\4x+y=x+8\quad|-x\end{cases}\\\\\\
\begin{cases}4x+4y-2x=12\\4x+y-x=8\end{cases}\\\\\\
\boxed{\begin{cases}2x+4y=12\\3x+y=8\end{cases}}$

3 0

3 years ago

David has four bags of apples and two bags of mangoes. The first four bags contain 6 apples each and the bags with mangoes conta

Neko [114]

Answer:

tal vez sea el fotosíntesis pero no creo jaja

Step-by-step explanation:

pero mañana va?

3 0

3 years ago

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