Q. Heather is a cashier. She can ring up 12 customers in 9 minutes.At this rate, how many minutes does it take her to ring up 4 customers?minutes
Determine Rate: Determine the rate at which Heather can ring up customers. Heather can ring up 12 customers in 9 minutes. This means her rate is 12 customers per 9 minutes.
Calculate Time for One: Calculate the time it takes to ring up one customer.To find the time for one customer, divide the total time by the number of customers.Time for one customer = 12 customers9 minutes=0.75 minutes per customer.
Calculate Time for 4: Calculate the time it takes to ring up 4 customers.Now, multiply the time for one customer by the number of customers Heather needs to ring up.Time for 4 customers = 0.75 minutes/customer ×4 customers = 3 minutes.