Answer Happy

My confusion is how to go about solving this problem with no modulus of elasticity and seemingly no way to calculate or find it.
PROBLEM 13 Determine the deflection of the hollow steel tube at the location the force is applied of the system shown below. L₁ = 12 in, L₂ = 6 in, Fy = 400 lbf, do = 1.5 in, di = 1.25 in Z-Axis Y-Axis X-Axis Fy