Answer:
$204.4
Step-by-step explanation:
The four chairs bought in June cost $35 each, all together $140. Then they bought 2 more chairs on sale for 8% off of $35 each or 92% of $35 which is $32.2 each, all together $64.4. Both buy's together would then equal $204.4
-6( 2-r ) = 42
-12 + 6r = 42
6r = 42 + 12
6r = 54
r = 9
all u have to do is find the second difference
25.6
32.4 - 6.8 = 25.6