Answer:
right-handed gloves and
left-handed gloves were sold.
Step-by-step explanation:
Given: In one month,
gloves were sold for a total revenue of
.
right-handed gloves cost
and left-handed gloves cost
.
To find: How much of each type of gloves did they sell?
Solution: Let they sell
right-handed gloves, and
left-handed gloves.
Now, cost of each right-handed gloves 
cost of each left-handed gloves 
Total revenue 
So, we get

Also, in a month
gloves were sold.
So, we get

Now, from
we get,
.
Putting
in equation
, we get






Now, putting
in equation
, we get



Hence,
right-handed gloves and
left-handed gloves were sold.