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Arturiano [62]
2 years ago
9

In a shop, two customers order

Mathematics
1 answer:
patriot [66]2 years ago
8 0

The cost of a tea cup and a cup of coffee in the shop is £0.90 and £1.50 respectively.

<h3>How to write and solve equation?</h3>

let

  • x = cost of tea
  • y = cost of coffee

x + 2y = 3.90

3x + y = 4.20

Multiply (1) by 3 to eliminate x

3x + 6y = 11.70

3x + y = 4.20

5y = 7.50

y = 7.50/5

y = 1.50

Substitute y = 1.50 into (1)

x + 2y = 3.90

x + 2(1.50) = 3.90

x + 3 = 3.90

x = 3.90 - 3

x = 0.90

Learn more about equation:

brainly.com/question/2972832

#SPJ1

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Answer:

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Step-by-step explanation:

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Step-by-step explanation:

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<u>Picture 1:</u>

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