Answer:
We don't really have the whole question, but to convert to a decimal, you should divide the numerator by the denominator.
Example:
Convert 5/8 to a decimal.
5 divided by 8 = 0.625
It will cost $5.10 for 3 pounds
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Answer:

Step-by-step explanation:
<u><em>The complete question is</em></u>
Suppose that a new fuel-efficient European car travels an average of 28 kilometers on 1 liter of gasoline. If gasoline costs 1.50 euros per liter, how much will it cost to drive 220 kilometers ?
step 1
using proportion
Find out the number of liters of gasoline needed for 220 kilometers
so

step 2
Find the cost to drive 220 kilometers
Multiply the cost of one liter of gasoline by the total liters of gasoline needed to travel 220 Km
so

Answer:
Seems like your other question was deleted by a moderator. I'll help here tho!
4.) you can use cross products, or make them into fractions and simplify them, or put them in decimal form
5.) 12/14 and 24/28 and 36/42
6.) 16:28 and 32:56 and 4:7
7.) 18 to 10 and 27 to 15 and 36 to 20
Step-by-step explanation:
hope it helps! have a great holiday season and stay safe! if you need/want an explanation, just comment and I'll edit my answer for ya! :)
Step-by-step explanation: