Question

John eats a bowl of cereal with milk twice a day. He finishes two gallons of milk in eight days. How much milk does John use for one bowl of cereal (assuming that the quantity of 1 bowl of cereal is constant)?

• A. $\frac{1}{6}\text{gallons}$
• B. $2\text{gallons}$
• C. $1\text{gallons}$
• D. $\frac{1}{8}\text{gallons}$

Answer 1

The correct option is D $\frac{1}{8}\text{gallons}$

Quantity of milk consumed by John in $8$ days $=2\text{gallons}$
Quantity of milk consumed by John in $1\text{day}=$
$\frac{\text{Milk consumed}}{\text{Time taken}}=\frac{2}{8}\text{gallons}=\frac{1}{4}\text{gallons}$
Bowls of cereal consumed by John in $1\text{day}=2\text{bowls}$

Quantity of milk consumed by John for each bowl of cereal
$=\frac{\text{Milk consumed per day}}{\text{No. of meals per day}}$
$=\frac{1}{4}÷2=\frac{1}{4}÷\frac{2}{1}=\frac{1}{4}\times \frac{1}{2}=\frac{1}{8}\text{gallons}$