Mathematics
Grade6
Easy
Question
A perfume costs $48 for 12-ounce bottle. ____$ would be the cost of a 2-ounce bottle.
- 8
- 3
- 5
- 7
Hint:
In the question posed, we are given cost of 12-ounce bottle. It is $48. We have to find cost of 2-ounce bottle. From the first data, we can find out the rate of an ounce of a bottle. Using this value, we can find the required quantity.
The correct answer is: 8
Cost of 12 ounce perfume bottle is $48
We have to find the rate of per ounce. We will find it by taking the ratio of the cost of cans and number of cans. As the rate is constant, we will use this value to find cost of 2-ounce bottle.
So the equation become
So the rate = $4 per ounce
Let’s find the cost of 2-ounce bottle
We will rearrange this for cost.
For this we will multiply both sides by ounce.
Rate × ounce = cost
Cost = Rate × ounce
Substituting the values we have found
Cost = 4 × 2
Cost = 8
Therefore, cost of 2-ounce bottle is $8
We have to be careful about the units. We have to make sure same quantities have same value.
