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Serga [27]
3 years ago
14

What is 3.4 / x = 2.17/ 7.7?

Mathematics
1 answer:
adoni [48]3 years ago
4 0
You could use a method called cross products to solve this proportional equation.  What you would do is multiply 3.4*7.7 =2.17*x

If multiplied correctly, your equation should be 26.18 = 2.17x

You are trying to get the variable alone on one side.  To do this, you have to undo the multiplication of the coefficient.  The opposite of multiplication is division, so you would divide both sides by 2.17.

If done correctly, your equation should now be x=<span>12.064516129

However, this can be rounded to x= approximately 12.066

</span>
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A certain taxi driver charges a rate of r cents per person per mile. How much money, in dollars, would it cost three people to t
Anika [276]

Answer:

It would cost ( 3xr/200) dollars  to three people to travel x miles.

Step-by-step explanation:

Here, according to the question:

The rate of the taxi fare = r cents per person per mile

The total number of people travelling = 3 friends

Each person travels x miles.

So, the total distance traveled by 3 friends

= 3  ( Distance traveled by 1 friend) = (3 x) miles

Now, as each mile costs r cents.

So, the cost of travelling (3 x) miles  = ( 3 x) (r)  cents   .... (1)

Also, 100 cents = $ 1

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⇒ r cents  = (r/100) dollars

So, the cost of travelling (3 x) miles  = ( 3xr/100) dollars  .... (2)

Now, If he gives them a 50% DISCOUNT.

Then the cost of travelling (3 x) miles  = ( 3xr/ 2 x 100) dollars  

= ( 3xr/200) dollars  

Hence,it would cost ( 3xr/200) dollars  to three people to travel x miles.

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2 years ago
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