5.25 + 2.25 = 7.50 MB
x/100 x (7.50) = 5.25
7.50x/100 = 5.25
7.50x = 5.25(100)
7.50x = 525
x = 525/7.50
x = 70
Hence, 70% of the application has already been downloaded.
B is definitely the answer
The mean will be 5 points higher...so...c would be the answer!
It would be: 25² = 7² + b²
b² = 625 - 49
b = √576
b = 24
In short, Your Answer would be Option B
Hope this helps!