Question

Please help

/ The Hotel is 163 miles from your house.your car travels 10.5 miles for every litre of petrol. Work out approximately how many litres of petrol the journey will use.

2/The price of petrol is 138.9 pence per litre Work out the approximate cost for the petrol to the hotel .

3/ you expect to travel 50 miles in each hour of a jurney how long the whole journey should take

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Answer 1

1. 163/10.5 = 15.5 litres
2. 138.9 * 15.5 = 2,152 pence which is 21$
3.163/50 =3.2 hours

Answer 2

The answers are:

1. 15.523 liters of petrol will be used.
2. The cost of petrol will be: 2156.2 pence
3. The journey will take 3 hours and 16 minutes approximately

Explanation:

Given:

Distance of Hotel and car = 163 miles

Distance travelled by car per liter = 10.5 miles

The number of liters will be obtained by dividing the total distance by distance travelled in one liter.

So,

`number\ of\ liters = (163)/(10.5) = 15.523\ liters`

2. Cost for petrol:

Cost of petrol per liter = 138.9 pence per liter

Then the total cost of petrol will be:

`Total\ cost = 138.9*15.523 = 2156.1447 => 2156.2\ pences`

3. Time taken for journey

Distance travelled in an hour = speed = 50 miles per hour.

The speed is given by the formula:

`speed = (distance)/(time)`

Putting the values

`50 = (163)/(t)\\t = (163)/(50)\\t = 3.26\ hours`

It will take: 3 hours and 0.26*60 = 15.6 minutes => 3 hours 16 minutes

Hence,

The answers are:

1. 15.523 liters of petrol will be used.
2. The cost of petrol will be: 2156.2 pence
3. The journey will take 3 hours and 16 minutes approximately