Question

the cost 2 apples and a banana is $2.80. Two apples and 2 bananas is $3.20 find the cost of buying an apple and a banana

Answer 1

$1.60

Explanation:

2a + b = 2.8
2a + 2b = 3.2

3.2 - 2.8 = 0.4

0.4 is one banana
2.8 - 0.4 = 2.4

2.4 = 2a
1.2 is one apple

1.2 + 0.4 = 1.6