Answer:
10 tacos for 8.49
Step-by-step explanation:
Try getting the same number of tacos for each deal, then compare the amount of money, the bigger the money, it isn't worth it.
Let's try with 30 tacos,
8.49 x 3 = 25.47 (30 tacos total)
5.40 x 5 = 27 (30 tacos total)
See which is cheaper.