Question

1 kg of oranges cost $\$$0.8 and a box of oranges contains 0.4 kg of oranges. Then, calculate the cost of 3 such boxes of oranges.

• A. $\$$0.96
• B. $\$$0.69
• C. $\$$0.99
• D. $\$$0.66

Answer 1

The correct option is A $\$$0.96

Cost of 1 kg of oranges = $\$$0.8
Weight of oranges in 1 box = 0.4 kg
∴ Cost of 1 box of oranges
= 0.8 4 $\times$ 0.4

Calculating 0.8 $\times$ 0.4 using the grid model, we get:


So, 0.8 $\times$ 0.4 = 0.32
∴ The cost of 1 box of oranges = $\$$0.32

So, cost of 3 box of oranges = 0.32 $\times$ 3

To calculate the cost of 3 boxes of oranges, we calculate the product of 0.32 $\times$ 3 in the following way:


Total divisions covered = 96
So, 0.32 $\times$ 3= 0.96

∴ The total cost of 3 boxes of oranges is $\$$0.96.