Answer:
6.25
Step-by-step explanation:
5 is almost the half of it and 4 is the other/ sorry I'm not very good at explaining
We know, 1 lbs = 0.45 Kg
52 lbs = 0.45*52 = 23.58 Kg
Check the picture below.
let's bear in mind that the segment MN is simply the sum of MQ + QN, and since M and N are midpoints, they cut that respective section into two equal halves.

![\bf \cfrac{~~\begin{matrix} 10QR \\[-0.7em]\cline{1-1}\\[-5pt]\end{matrix}~~}{~~\begin{matrix} 6QR \\[-0.7em]\cline{1-1}\\[-5pt]\end{matrix}~~}\implies \cfrac{5}{3}](https://tex.z-dn.net/?f=%5Cbf%20%5Ccfrac%7B~~%5Cbegin%7Bmatrix%7D%2010QR%20%5C%5C%5B-0.7em%5D%5Ccline%7B1-1%7D%5C%5C%5B-5pt%5D%5Cend%7Bmatrix%7D~~%7D%7B~~%5Cbegin%7Bmatrix%7D%206QR%20%5C%5C%5B-0.7em%5D%5Ccline%7B1-1%7D%5C%5C%5B-5pt%5D%5Cend%7Bmatrix%7D~~%7D%5Cimplies%20%5Ccfrac%7B5%7D%7B3%7D)