15$ .. 3$ 12 more dollars left - you can only buy 3 boooks !
Answer:
b
Step-by-step explanation:
go with that and you may win at this multiply question
Without the table I will guess 5 is common to all 3 they are proportional
The common difference is 1 1/3
40-1 1/3= 38 2/3
38 2/3-1 1/3=37 1/3
37 1/3-1 1/3=36
Therefore the missing number is 38 2/3