40% of a number is 2.8 less than 4% of 36. What's the number

40% of a number is 2.8 less than 4% of 36. What's the number

Let this number be X
36*1/4-X*40%=2.8
9-0.4X=2.8
0.4X=6.2
X=15.5

45 percent of a number is 8 more than 9 percent of 36

Let this number be X
45%x=36*7/9+8
0.45X=36
X=80

Five out of eight of a number is 15. What's one out of six?

This number = 15 / (5 / 8) = 24
24*1/6=4
One sixth of his is four

1. Seven eighths of a number is 3.5. What's one and half times of this number? 2. 40% of a number is 2.8 less than 4% of 36. Find this number

It's one and a half times six
This number is 15.5