Shampoo is sold at two sizes A and B
A contains 800ml and costs $1.30and B contains 1.5 liters and costs $2.30
Which is the better value for money? Show your working clearly
What is the answer?
To determine which shampoo size offers better value for money, we need to compare the prices per milliliter.
For size A, the shampoo costs $1.30 for 800ml.
Hence, the price per milliliter for size A is calculated as follows:
Price per milliliter for size A = $1.30 / 800ml = $0.001625 per milliliter
For size B, the shampoo costs $2.30 for 1500ml.
Similarly, we calculate the price per milliliter for size B:
Price per milliliter for size B = $2.30 / 1500ml = $0.001533 per milliliter
Comparing the prices per milliliter, we can see that size B offers a lower price per milliliter ($0.001533) compared to size A ($0.001625).
Therefore, based on the calculations, size B is the better value for money as it offers a lower price per milliliter of shampoo.
To determine which size of shampoo offers better value for money, we need to calculate the cost per unit volume for each size.
For size A (800ml), the cost is $1.30.
Cost per mL for size A = $1.30 / 800 ml = $0.001625/ml.
For size B (1.5 liters), the cost is $2.30.
Since there are 1000 ml in 1 liter, we can convert 1.5 liters to milliliters:
1.5 liters = 1.5 x 1000 ml = 1500 ml.
Cost per mL for size B = $2.30 / 1500 ml = $0.001533/ml.
To determine which size offers better value for money, we compare the cost per mL for each size.
Size A has a cost per mL of $0.001625/ml, while Size B has a cost per mL of $0.001533/ml.
From the calculations, we can see that size B has a lower cost per mL compared to size A. Therefore, size B offers better value for money as it provides more shampoo per dollar spent than size A.
Unit price for A : 1.30/800 = ..
Unit price for B : 2.30/1500 = ...
What do you think?