Mathematics: Aman travels from town x to town y at an average rate of 60 mph and returns at an average rate of 50 mph. he takes a 1/2 hour longer than he would take if he made the round trip at an average of 55 mph. what is the distance from town x to town y?

Aman travels from town x to town y at an average

Ответ:

navyaseth620

30.12.2021

$v_1=60mph\\
v_2=50mph\\
v_3=55mph\\
t_1- time\ needed\ to\ travel\ from\ X\ to\ Y\ at\ v_1\ and\ return\ with\ v_2\\
t_2- time\ needed\ to\ travel\ from\ X\ to\ Y\ at\ v_3\\\\
t_1-0,5h=t_2\\
s-travelled\ distance\\
v=\frac{s}{t}\\
v*t=s\\
t=\frac{s}{v}\\
\frac{0,5s}{60}+\frac{0,5s}{50}-0,5=\frac{s}{55}\\\\
\frac{1}{120}s+\frac{1}{100}s-\frac{1}{55}s=\frac{1}{2}\\
\frac{1}{6600}s=\frac{1}{2}\\
s=3300miles\\
Distance\ from\ town\ X\ to\ town\ Y\ is 1650miles.


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Ответ:

myaaa13754

10.03.2022

Mathematics

64x

Step-by-step explanation:

because 4 * 2 is in parenthesis, that means you multiply 8x by them.

8x (4*2)

8x (8)

64x

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Aman travels from town x to town y at an average rate of 60 mph and returns at an average rate of 50 mph. he takes a 1/2 hour longer than he would take if he made the round trip at an average of 55 mph. what is the distance from town x to town y?

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