If we want to see how much gas Jake can buy, we have to divide. We know that gas is $3.20 per gallon and he has $20. We have to divide 20 and 3.20, so we get 20/3.20 = 6.25. Jake can get 6.25 gallons of gas. Or 6 1/4 gallons of gas if you want the answer with a fraction.
Your max amount for this is $20. Let's say x represents the number of gallons.
20 ≥ 3.2x x = 6.25 gallons If they're asking for integers or whole numbers, you'd round down to 6 because you only have enough money for 6 full gallons. If you rounded up to 7, you wouldn't be able to fill it up completely because then you'd be over your $20.00 budget for gas.
A ratio is like a fraction, so since you are provided with the numbers its easy to put it into a ratio depth is 3.8km width is 7600km ratio is 3.8:7600
