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For, 15 cups of coffee for Rs 1000.

Tea - 24 cups in 6oo rs

so, 1 cup Tea - 25 rs

coffee - 15 cups in 1000rs

so, 1 cup coffee - RS 66 but also possible value- 66,65,64,63

choose value 63 because we want to purchase maximum cups of coffee.

Here,

2200 Rs and 8 cups of tea and X cups of coffee

8*(25)+X *(63) = 2200

x * (63) = 2000

max value for X =31 So, X * 63 < 2000

Ans is 31 cups of coffee.

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