➡️The cost of petrol rises by 2 cents a liter. last week a man bought 20 liters at the old price. This week he bought 10 liters at the new price. Altogether, the petrol costs $9.20. What was the old price for 1 liter?
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Answered by
13
Answer:
20x + 10*(x+2) = 920 cents, where x is old price in cents for 1 liter.
20x + 10x + 20 = 920
30x = 920-20
30x = 900 ====> x = 900%2F30 = 30.
Answer. The old price for one liter of petrol was $0.30 per liter.
Answered by
2
20x+10×(x+2)=920%.
Where x is old price in cents for 1 litre.
20x+10x+20=920.
30x=920-20.
30x=900--x=900% 2f 30=30.
Your answer is.....
the old price for 1 litre of petrol was 0.30 per litre.
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