There are 10 marks between 7 and 8, therefore each mark is equivalent to 0.1
For 8.3, count 3 marks after 8:

First convert the fraction into decimal. Then count 6 marks from 7:
Because....
of means *
1/2* 2= 2/2 reduce it
you will get one
Answer:
Tbe delivery person can only bring 15 boxes of books at one time
Step-by-step explanation:
160+(15×40)= 760