Answer:
mattress = $1200
Explanation:
Given that the marked price of a mattress is $1344 and it is sold at a profit of 12%, we can calculate the cost price of the mattress using the following formula:
Cost price = Marked price / (1 + Profit %)
Here , Profit % = 12%, so we get:
Cost price = 1344 / (1 + 0.12)
Cost price = 1344 / 1.12
Cost price = $1200
Therefore, the cost price of the mattress is $1200.