All you have to do is the amount she bought divided by 0.05 and then add the answer you get to the amount she bought each time
It would be 8 because 8+4=12
Answer:
by adding the 2 to the 8 you get 10 so you just do the same process for 80 and 20 just add the 2 and 8 and then after just add a 0 and there you get the answer 100
Step-by-step explanation:
2+8=10
20+80=100