SOLUTION: A driver decreases his petrol consumption in the first day of any month in the ratio 2 : 3 litres of petrol per day. He normally uses 4.5 litres of petrol per day. What is his cons

Question 1099519: A driver decreases his petrol consumption in the first day of any month in the ratio 2 : 3 litres of petrol per day. He normally uses 4.5 litres of petrol per day. What is his consumption on the first day of any month

Answer by Theo(13342) (Show Source): You can put this solution on YOUR website!
he's using 2 liters instead of 3 liters on the first day of any month.
that means he's using 2/3 as much.
2/3 * 4.5 = 3
instead of using 4.5 liters, he's using 3 liters.
the ratio is 3 to 4.5
this can be shown as a fraction of 3 / 4.5 which can be simplified to 2 / 3 when you divide both numerator and denominator by 1.5.
numerator of 3 / 1.5 = 2
denominator of 4.5 / 1.5 = 3
ratio of 2:3 is the same as ratio of 3:4.5.

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