Answer: H - 35
Explanation:
Number of tickets that are sold by Helen = H
Since we are informed in the question that Felix sold 35 fewer raffle tickets than Helene.
The number of tickets that Felix sold will then be 35 subtracted from the total tickets sold by Helene. This will be:
= H - 35
For example, lets say Helen sold 80 tickets. Therefore, Felix will sell:
= 80 - 35
= 45 tickets.