In a café, I order a cup of tea and a piece of cake and it costs £1.10. The next time I order 2 cups of tea and one piece of cak e and it costs £1.70. Find the cost of a piece of cake.
2 answers:
Answer:
£0.50
Step-by-step explanation:
t = one cup of tea
c = one piece of cake
t + c = £1.10
2t + c = £1.70
the cost increases by £0.60 (£1.70 - £1.10) when you order one more cup of tea which means that one cup of tea costs £0.60
substitute £0.60 into t + c = £1.10
£0.60 + c = £1.10
rearrange to get c = £1.10 - £0.60 = £0.50
so one piece of cake costs £0.50
Answer: piece of cake is 0.5£ Explanation: Tea + cake = 1.10 2 Tea + cake = 1.70 From that we can find the value of a cup of tea by simply 1.70 - 1.10 = 0.6£ If cup of tea = 0.6£ Then a cake = 1.10 - 0.6 = 0.5 £
You might be interested in
Answer:
2x+3x=5x
Step-by-step explanation:
The reason for this answer is algebra. Since you give a full explanantion on it I'm not sure if I answered it correctly. But here is what I think from what you gave of the question.
Answer:
n = 6
Step-by-step explanation:
17n + 4n - 4 =122
combine like terms 17n & 4n
21n - 4 = 122
21n - 4 + 4 = 122 + 4
21n = 126
21n / 21 = 126 / 21
n = 6
Answer:
16ft
Step-by-step explanation:
use pythagreom thereom
12^2+b^2=20^2 solve
144+b^2=400
b^2= 256 square it
b= 16
Answer:
c
Step-by-step explanation:
X+7<23 x<23-7 x<16 So, all numbers from zero to 15 Those are 16 positive integers