Question: If 12 apples cost $3, how much will 20 apples cost?
Options:
$4.50
$5.00
$5.50
$6.00
Correct Answer: $5.00
Solution:
Cost per apple = $3 / 12 apples = $0.25. For 20 apples, cost = 20 * $0.25 = $5.00.
If 12 apples cost $3, how much will 20 apples cost?
Practice Questions
Q1
If 12 apples cost $3, how much will 20 apples cost?
$4.50
$5.00
$5.50
$6.00
Questions & Step-by-Step Solutions
If 12 apples cost $3, how much will 20 apples cost?
Step 1: Find out how much one apple costs by dividing the total cost by the number of apples. So, $3 divided by 12 apples equals $0.25 per apple.
Step 2: Now, to find out how much 20 apples will cost, multiply the cost of one apple ($0.25) by the number of apples (20). So, $0.25 times 20 equals $5.00.
Unit Rate Calculation – Understanding how to calculate the cost per unit (apple) and then use that to find the total cost for a different quantity.
Proportional Reasoning – Applying proportionality to determine costs based on given quantities.
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