The table shows the prices of cupcakes at two shops. The cupcakes are only sold in sets of 4 cupcakes in Irene's Bakery or sets of 5 cupcakes in Tiffany's Bakery.

Shop	Price of cupcakes
Irene's Bakery	4 for $10
Tiffany's Bakery	5 for $11

1. Kathy has $26.30. She wants to buy 15 cupcakes from Tiffany's Bakery. How much more money does she need to buy the 15 cupcakes?
2. Warren has $94. He wants to buy the greatest possible number of cupcakes with his money from one of the two shops. What is the greatest possible number of cupcakes he can buy with his money?

(a)
Number of sets of 5 cupcakes
= 15 ÷ 5
= 3

Cost of 15 cupcakes 
= 3 x 11
= $33

Amount that Kathy needs more to buy the 15 cupcakes
= 33 - 26.30
= $6.70

(b)
Number of sets of 4 cupcakes that Warren could buy at Irene's Bakery
= 94 ÷ 10
= 9 r 4

Number of cupcakes that Warren could buy at Irene's Bakery
= 9 x 4
= 36 

Number of sets of 5 cupcakes that Warren could buy at Tiffany's Bakery
= 94 ÷ 11
= 8 r 6

Number of cupcakes that Warren could buy at Tiffany's Bakery
= 8 x 5
= 40 (More)

Greatest possible number of cupcakes that Warren can buy with his money = 40

Answer(s): (a) $6.70; (b) 40