Can anyone help me understand if any variables in this problem can be found? here's the question

A massless beaker holds a mass, mw, of water at T=0 °C. Masses of iron and aluminum
are simultaneously dropped into the water, and the system (insulated from the
surroundings) comes to equilibrium. The masses, initial temperatures, and specific heats
are summarized in the table below.
Find the equilibrium temperature, Tf.

Question

Can anyone help me understand if any variables in this problem can be found? here's the question

A massless beaker holds a mass, mw, of water at T=0 °C. Masses of iron and aluminum
are simultaneously dropped into the water, and the system (insulated from the
surroundings) comes to equilibrium. The masses, initial temperatures, and specific heats
are summarized in the table below.
Find the equilibrium temperature, Tf.

anonymous · Answer

here are the variables given

Substance   Mass   InitialT             Specific heat
Water         m_w 	 0°C                       c_w
Aluminum   m_w      100°C           	0.2c_w
Iron 4         m_w      -40°C 	                0.1c_w