Question

two sodas and two sundaes cost $4. three sodas and one sundae coat $3.90. what is the cost of one soda and one sundae

Answer 1

$2

Explanation:

The first purchase is twice the value we seek:

2 sodas + 2 sundaes = $4

2 × (1 soda + 1 sundae) = $4

1 soda + 1 sundae = $2 . . . . . . . . . divide by 2