Question

On Sunday, Sheldon bought 4 1/2 kg of plant food. He used 1 2/3 kg on his strawberry plants and used 1/4 kg for his tomato plants. How many kilograms of plant food did Sheldon have left? Which number sentence matches the problem? *
1 point

Answer 1

Answer:

$2\frac{7}{12}$ kg of plant food

Step-by-step explanation:

The second question doesn't have choices, so I'll answer the first question only.

In order to know how much plant food Sheldon has, you have to subtract $1\frac{2}{3}$ kg of plant food used for the strawberry plants from $4\frac{1}{2}$ kg of plant food. Then, $\frac{1}{4}$ kg will be subtracted from the difference.

• $4\frac{1}{2}$ - $1\frac{2}{3}$ = ?

Let's convert both fractions into improper fractions first, so it will be easier to subtract.

• $4\frac{1}{2}$ = $\frac{9}{2}$

• $1\frac{2}{3}$ = $\frac{5}{3}$

Now, let's subtract.

• $\frac{9}{2}$ - $\frac{5}{3}$ = $\frac{17}{6}$ or $2\frac{5}{6}$ kg of plant food

Next, you have to subtract $\frac{1}{4}$ kg of plant food used for the tomato plants from the remaining plant food of $\frac{17}{6}$ kg.

Let's subtract again.

• $\frac{17}{6}$ - $\frac{1}{4}$ = $2\frac{7}{12}$ kg of plant food

Therefore, Sheldon has $2\frac{7}{12}$ kg of plant food left.