Final answer:
To calculate the cost of 2 cups at 20¢ each, we multiply 20¢ by 2 to get 40¢. The fewest coins to make 40¢ are one quarter (25¢), one dime (10¢), and one nickel (5¢), totaling three coins.
Step-by-step explanation:
The question is about calculating the total cost of two cups when one cup costs 20¢. To find the total cost, we simply multiply the cost of one cup by the number of cups:
- Cost of one cup = 20¢
- Number of cups = 2
- Total cost = 20¢ × 2 = 40¢
Now, we need to use the fewest number of coins to show 40¢. The coins available are pennies (1¢), nickels (5¢), dimes (10¢), and quarters (25¢). A combination that uses the fewest coins would be:
- One quarter (25¢) and
- One dime (10¢) and
- One nickel (5¢)
This way, we are using only three coins to make up the total of 40¢.