Answer:
Blake's total number of cards now: 1.25b
Step-by-step explanation:
Total number of cards now would be equal to 25% increase from b.
<em>This means we INCREASE b by 25% OF b.</em>
<em />
What is 25% of b???
Now we need to ADD this to original amount, b.
So,
x = 10
25x + 10 = 260
=> 25x = 250
=> x = 10
Hoped this helped.
A and C