Complete Question
Oh 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 on his tomato plant.How many kg of palnt food did sheldon have left?
Answer:
2 7/12 kg
Explanation:
Oh 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 on his tomato plant.How many kg of palnt food did sheldon have left?
Step 1
We add up the kg of plant food that he used
He used 1 2/3 kg on his strawberry plants and used 1/4 kg on his tomato plant.
The total amount of plant food that he used = 1 2/3 kg + 1/4 kg
Lowest Common Denominator 12
1 + (2/3 + 1/4)
1 + (8 + 3/12)
1 11/12 kg of plant food
Hence he has used 1 11/12 kg of plant food
Step 2
The amount of plant food that he had left is calculated as:
Amount of plant food Sheldon bought - Amount of plant food he used
Amount of plant food Sheldon bought = 4 1/2 kg
The amount of plant food that he had left = 4 1/2 kg - 1 11/12
4 - 1 + (1/2 - 11/12)
Lowest common denominator = 12
3 + ( - 5/12)
= 2 7/12 kg
Therefore, the kg of plant food that sheldon had left = 2 7/12 kg