Carlotta's gas tank took 10 gallons of gas. The gas pump total read \( \$11.59\). Because Carlotta paid cash she had to pay only \( \$11.09\). How much does a gallon of gas cost if one pays cash?
To find the cost per gallon for cash payment, divide what Carlotta paid (\(\$11.09\)) by the number of gallons she bought (10). Just move the decimal point one place to the left (\(\$1.109\)). In cents this can be written either as 110.9¢, or 1109/10¢.