We know that a multiplied by one and half equals B multiplied by 0.05 equals C divided by one and one-third equals D divided by 10

We know that a multiplied by one and half equals B multiplied by 0.05 equals C divided by one and one-third equals D divided by 10

A/2 = 0.05B = C÷1 1/3 = D÷10
Rewrite as
1/2 A = 1/20 B = 3/4 C = 1/10 D
Since 1 / 20 < 1 / 10 a > C

One divided by one and a half divided by one and a third divided by one and a quarter divided by one and a nineteenth this problem is solved without brackets

One divided by one and a half divided by one and a third divided by one and a quarter. Divided by one nineteenth
=1×2/3×3/4×4/5×.×19/20
=2/20
=1/10

What's one and a half divided by minus two thirds

One and half times minus two thirds = - 9 / 4

If a divided by B equals two-thirds, then a is two-thirds of B, and B is one and half times of A

Yes, it's very simple