3 5 1 . 6 Bob's Monthly Purchases Prices Quantities Consumed per month 2017 2018 2017 2018 Chocolate bars $1.25 $1.50 w Cans of cola $0.60 $0.75 18 Milk (4 L) $4.29 $4.69 ANANUI JWA O Movies $12.00 $16.00 Chips $1.50 $1.20 Show your work. (a) Calculate the value of Bob's 2017 shopping basket using 2017 prices. Indicate the item weights associated with this shopping basket. (3 marks) (b) Calculate the value of Bob's 2017 shopping basket using 2018 prices. (2 marks) (c) If 2017 is used as the base year, what is the 2018 value of Bob's price index? (1 mark) (d) What is the 2017 value of this index? (1 mark) (e) Calculate the percentage that this index has changed between 2017 and 2018. (1 mark)