The below structure shows a seesaw. Seats in this structure are close to the ground.

What is the value of reaction at point $B$ in $kN?$

Upward reactions are POSITIVE.

$P1=3kN$

$P2=2\mathrm{.}5kN$

$L1=1\mathrm{.}5m$

$L2=5m$

Key in the result to ONE Decimal Place. For example, $1\mathrm{.}2$ and not $1$ or $1\mathrm{.}21$

Enter the numeric value without unit. For example, $1\mathrm{.}2$ and not $1\mathrm{.}2kN$