500 = 35x+50
450 = 35x
450/35 = x
12.85 = x
12 lessons
Let's call the unknown number x.
x+ (50% of x) = 135
x + (0.5x) = 135
1.5x = 135
x = 135/1.5
x = 90
Therefore, the number is 90
It would be D 54/60
thanks
Answer:
x=9
Reverse. 14-5=9, so x must be 9.
The answer to that problem is 27. You could divide 108 by 4 and get the answer of 27
