Photo AI
Sugar is sold in four different sized packets - HSC - SSCE Mathematics Standard - Question 2 - 2019 - Paper 1
Question 2
Sugar is sold in four different sized packets. Which is the best buy? A. 100 g for $0.40 B. 500 g for $1.65 C. 1 kg for $3.50 D. 2 kg for $6.90
Worked Solution & Example Answer:Sugar is sold in four different sized packets - HSC - SSCE Mathematics Standard - Question 2 - 2019 - Paper 1
Step 1
Calculate the price per gram for each option
Answer
To determine the best buy, we need to calculate the price per gram for each packet:
-
Option A: 100 g for $0.40
- Price per gram: ( \frac{0.40}{100} = 0.004 ) or $0.004 per gram
-
Option B: 500 g for $1.65
- Price per gram: ( \frac{1.65}{500} = 0.0033 ) or $0.0033 per gram
-
Option C: 1 kg (1000 g) for $3.50
- Price per gram: ( \frac{3.50}{1000} = 0.0035 ) or $0.0035 per gram
-
Option D: 2 kg (2000 g) for $6.90
- Price per gram: ( \frac{6.90}{2000} = 0.00345 ) or $0.00345 per gram
Step 2