5 points, because I think you’re saying they started off with 30 points and they answered a question wrong a lost 25 so 30-25 is 5.
To put it into an equation, it would be:
340 = 2x - 100
with x being the amount of sophomores at BHSS.
Solve it:
340 + 100 = 2x
2x = 440
x = 220
The number of sophomores at BHSS is 220.
Muliply .15 to 828 and get your answer the add it to 828
