Question

Heather is a cashier she can ring up 12 customers in 9 miniutes at this rate how many miniutes does it take her to ring up 4 customers

Answer 1

3 minutes

Explanation:

think of 12 and 9 as a fraction 12/9 and then 4 and x (the number we are looking for) 4/x

12÷3=4 and 9÷3=3

so heather can ring up 4 costumers in 3 minute

hope this helped