Answer:
mean
Step-by-step explanation:
2x+6 - х -4
2x - x = - 4 - 6
x=-10
20x - 8 = 18x +6
20x - 18x = 6 +8
2x = 14
x=7
The answer is 36
Let the number be <em>x</em>
x/40 is her mark
she got 90% mark correct
x/40 x 100 = 90
by cancellation we get 9 x 4 = 36
HOPE THIS HELPS