Question 1192168: When full, a car's petrol tank holds k litres. After using 15 e, the remaining petrol is enough for the car to travel 344 km.
a Express the amount of petrol left in the tank in terms of k.
b Hence express the distance that the car travels on 1 of petrol in terms of k.
c If the car travels 8 km/l, find the value of k.
Found 2 solutions by ikleyn, josgarithmetic:
Answer by ikleyn(52795)   (Show Source):
You can put this solution on YOUR website! .
What is "15 e" in your post ?
Is it 15 liters ?
It should be clarified or written clearly.
Re-write your post accurately and re-submit it to the forum.
Please do not post it to me personally.
Answer by josgarithmetic(39618)  (Show Source):
You can put this solution on YOUR website! --------------------------------------------------------------
When full, a car's petrol tank holds k litres. After using 15 e, the remaining petrol is enough for the car to travel 344 km.
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k, the tank's capacity in liters.
k-15e, amount in the tank after removing 15e.
 , fuel efficiency in kilometers per liter.
Given also, fuel efficiency 8 kilometers per liter
then
and you can solve for k.
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