Question

A stationery shop has a sale on address books and calendars. Two of the address books and one calendar cost a total of $10. One of the address books and three calendars cost a total of $15. How much does one calendar cost?

Answer 1

What is the answer and how you got it?

Answer 2

Let Address Book = x,
Calendars = y

2x + y = 10 ----equation (1)
x + 3y = 15 ----equation (2)

using eq. (2)
x = 15 - 3y ---equation (3)

Plugging the value of x in equation (1)

2(15-3y) + y = 10
30 - 6y + y = 10
30 - 5y = 10
-5y = 10 - 30
-5y = -20
y = 4
So the Price of the Calendar is 4 $ each.

and using y = 4 in equation 3

x = 15 - 3(4)
x = 15 - 12
x = 3
So the price of the Address book is 3$ each.

Hope this helps :)

Answer 3

thank you random awesome person

Answer 4

Gamer what you play Ghosts :D

Answer 5

everything lol