Question

1. in pe class, carl runs a distance of 1.17 miles in 9 minutes. at that rate, how far does carl run in one minute?
2. marianne spends $9.45 on 5 greeting cards. each card costs the same amount. what is the cost of one greeting card?

Explanation:

Problem 9

Step1: Identify rate formula

Rate = Distance / Time. Here, distance is 1.17 miles, time is 9 minutes.

Step2: Calculate rate

Divide distance by time: $1.17 \div 9$.
Perform the division: $1.17 \div 9 = 0.13$.

Step1: Identify unit cost formula

Unit cost = Total cost / Number of items. Total cost is $9.45, number of cards is 5.

Step2: Calculate unit cost

Divide total cost by number of cards: $9.45 \div 5$.
Perform the division: $9.45 \div 5 = 1.89$.

Answer:

0.13 miles per minute

Problem 10