Question

in the menu it said three glasses of cold coffee equals to 4 cups of cappuccino.
Someone paid 1400 for four cups of cappuccino and 4 glasses of cold coffee.how much will I pay for 5 cups of cappuccino and 5 glasses of cold coffee?

Answer 1

the answer is 1266(app.)

Answer 2

Rs 1750 has to paid for 5 cups of cappuccino and 5 glasses of cold coffee

Solution:

Let "g" be 1 glass of cold coffee

Let "c" be 1 cup of cappuccino

Three glasses of cold coffee equals to 4 cups of cappuccino

3g = 4c

Someone paid 1400 for four cups of cappuccino and 4 glasses of cold coffee

Which can be written as:

4c + 4g = 1400

Substitute 3g = 4c

3g + 4g = 1400

7g = 1400

g = 200

Thus,

4c + 4(200) = 1400

4c + 800 = 1400

4c = 600

c = 150

how much will I pay for 5 cups of cappuccino and 5 glasses of cold coffee?

5c + 5g = 5(150) + 5(200) = 750 + 1000 = 1750

Thus Rs 1750 has to paid for 5 cups of cappuccino and 5 glasses of cold coffee

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