Answer: Option
A
Explanation:
Let Muskan speed upstream be x kmph
So, her speed downstream will be 3x kmph
According to the question,
x + 3x 
= 16 ⇒ x = 8 kmph 

2 
So, upstream speed = x = 8 kmph
Downstream speed = 3x = 24 kmph
Speed of stream = 
24 – 8 
= 8 kmph 
2 
∴ Difference between speed of Muskan and that of stream = 16 – 8 = 8 kmph.