On Monday patrick bought 10 cups of coffee and 5 doughnuts for his office at the cost of $16.50. On Tuesday, he bought 5 cups of coffee and 10 doughnuts for a total of $14.25. How much was each cup of coffee?
by

Your answer

Your name to display (optional):
Privacy: Your email address will only be used for sending these notifications.
Anti-spam verification:
To avoid this verification in future, please log in or register.

1 Answer

Let the price of a cup and a doughnut be x and y respectively.

then,

10x + 5y = 16.50  ------------(1)

and 5x + 10 y = 14.25 -------(2)

subtracting (2) from (1)*2 we get:

15x = 18.75

x = 1.25

So the price of each cup of coffee is $1.25
by Level 6 User (20.0k points)

Related questions

1 answer
asked Oct 16 by anonymous | 56 views
1 answer
asked Oct 16 by anonymous | 55 views
1 answer
asked Oct 16 by anonymous | 34 views
1 answer
asked Oct 16 by anonymous | 42 views
1 answer
asked Oct 16 by anonymous | 46 views
1 answer
asked Oct 15 in Calculus Answers by anonymous | 47 views
1 answer
asked Oct 15 by anonymous | 40 views
2 answers
asked Oct 15 in Calculus Answers by anonymous | 54 views
1 answer
asked Oct 14 by anonymous | 48 views
1 answer
asked Oct 14 by anonymous | 38 views
Welcome to MathHomeworkAnswers.org, where students, teachers and math enthusiasts can ask and answer any math question. Get help and answers to any math problem including algebra, trigonometry, geometry, calculus, trigonometry, fractions, solving expression, simplifying expressions and more. Get answers to math questions. Help is always 100% free!
85,684 questions
91,353 answers
2,211 comments
112,664 users