Siti bought 2.5 kg of prawns for $18.75. She then bought another 3.5 kg of the same prawns at the same price per kilogram. How much did she pay in total for all the prawns?
Show Worked Solution
Worked Solution
Step 1: Find the price per kilogram.
Price per kg = $18.75 ÷ 2.5
Multiply both by 10: $187.50 ÷ 25 = $7.50 per kg
Step 2: Find the total mass of prawns bought.
Total mass = 2.5 + 3.5 = 6 kg
Step 3: Find the total cost.
Total cost = 6 × $7.50 = $45.00
Answer: Siti paid $45.00 in total.
Correct answer: $45.00
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