You helped 3.6 customers per half hour yesterday so I helped how many customers in 7,.5 hours yesterday

Step-by-step explanation:

I guess, "you" and "I" are working with the same efficiency and work rate.

and with the typos in it, it is not clear, if I understood the problem and the given data properly.

but based on what I understood :

so, 3.6 customers in 0.5 hours.

7.5 hours × 2 = 15 times 0.5 hours.

15 × 3.6 = 54 customers.

so, with the same work rate as you, I helped 54 customers in 7.5 hours.

a

step-by-step explanation:

the answer is a