3 teas and 2 coffees have a total cost of £7.80 5 teas and 4 coffees have a total cost of £14.20 Work out the cost of one tea and the cost of one coffee.

3t + 2c = 7.80 ---> x2 to get 6t + 4c = 15.605t + 4c = 14.20 6t + 4c = 15.60-- 5t + 4c = 14.20= 1t = 1.40If t = 1.40 substitute t in to the equation to get:(3 x 1.40) + 2c = 7.80 ---> 2c = 3.60 --> c = £1.80

HK
Answered by Hania K. Maths tutor

2272 Views

See similar Maths GCSE tutors

Related Maths GCSE answers

All answers ▸

Find a solution for the following simultaneous equations: 2x+y=5 and 2x-5y=2


What is the cosine rule and when can it be used?


What is the method for factorising the expression 'x^2 + 3x + 2'?


What is an inverse function?


We're here to help

contact us iconContact usWhatsapp logoMessage us on Whatsapptelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

© MyTutorWeb Ltd 2013–2025

Terms & Conditions|Privacy Policy
Cookie Preferences