Final answer:
Sam will pay a total of 1/2 a dollar for ice creams for himself and his four friends, as each ice cream costs 1/10 of a dollar.
Step-by-step explanation:
The question relates to a simple multiplication of fractions problem. Sam has to pay for ice cream for himself and his four friends. Since each ice cream costs 1/10 of a dollar, we need to find the total cost for five ice creams (Sam plus his four friends).
To compute the amount Sam has to pay, we can use the following calculation:
- Multiply the number of ice creams (5) by the cost of each ice cream (1/10 of a dollar).
- 5 ice creams × 1/10 dollar each = 5/10 dollars.
- Reduce the fraction 5/10 to its simplest form to find the total cost.
- 5/10 dollars = 1/2 a dollar.
Therefore, Sam has to pay a total of 1/2 a dollar for ice creams for himself and his four friends.
To determine how many tenths of a dollar Sam has to pay for ice cream, we need to multiply the cost of each ice cream by the number of friends Sam has. Each ice cream costs 1/10 of a dollar, and Sam has 4 friends. So, Sam has to pay:
1/10 * 4 = 4/10 = 0.4 tenths of a dollar