Problema Solution
Three salad rolls and four pies cost $20.56 all together. A salad roll costs $1.16 more then a pie. How much does each cost?
Answer provided by our tutors
Let
x = the cost of one salad roll
y = the cost of one pie
Three salad rolls and four pies cost $20.56 all together:
3x + 4y = 20.56
A salad roll costs $1.16 more then a pie:
x = 1.16 + y
By solving the system of equations:
3x + 4y = 20.56
x = 1.16 + y
........
........
x = $3.60
y = $2.44
One salad rolls costs $3.60.
One pie costs $2.44.