Ahmed is taking orders for lunch. A slice

Mathematics

1 answer:

Wittaler [7]3 years ago

3 0

Answer:

x+y=7; 2.5x+3.5y=21.5
(x, y) = (3, 4)

Step-by-step explanation:

Perhaps you want a system of equations and their solution.

You have defined the variables, so you just need to write the relationships.

x + y = 7 . . . . we assume one order per person

2.50x + 3.50y = 21.50 . . . . we assume Ahmed collected just enough

Multiplying the first equation by 2.5 and subtracting that from the second equation, we get ...

(2.50x +3.50y) -2.5(x +y) = (21.50) -2.5(7)

y = 4

x = 7 -4 = 3

There were 3 pizza orders and 4 sandwich orders.

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