How do you determine how far Doris can travel is Doris’s truck gets 10 \frac{2}{3}1023 miles per gallon and her tank has 5 \frac{1}{2}512 gallons of gas?

1 Answer

Doris' truck has mileage 10 2/323 miles per gallon of gas, which can be written as 32/3323 miles per gallon of gas.

Doris can drive 32/ 3323 miles using one gallon of gas.

Doris has 5 1/212 gallons of gas.

On 1 gallons she can drive 32/3 323 miles/ gallon

On 5 gallons she can drive ( 32/3 323 ) miles / gallon x 5 gallon

= (160/3)(1603) mile

On 1 gallons she can drive 32/3 323 miles/ gallon

On half a gallon she can drive ( 32/3 323 ) miles / gallon x 0.5 gallon

= (32 x 0.5 ) / 3 = (16 /3)(163) miles.

on 5 1/212 gallons of gas she can travel (160/3)(1603) mile + (16 /3)(163)mile.

(160 + 16 )/ 3 160+163= 176 /3 1763 = 58.67 mile.