How to Calculate Li+ Ion Concentration in Saturated Li3PO4 Solution?

[tgt]

Homework Statement

Lithium phosphate, Li3PO4, has a solubility product Ksp = 2.37 × 10-4. What is the concentration of Li+ ions in a saturated solution of Li3PO4?

The Attempt at a Solution

What is the initial concentration of Lithium? Or does it matter?

I got 0.163 M but answer says 0.0544 M

Without it I can't do it! Somebody please help. Thanks.

 

[Borek]

0.163 M looks OK to me, 0.0544 is three times too low (which suggests an obvious mistake).

 

[tgt]

0.163 M looks OK to me, 0.0544 is three times too low (which suggests an obvious mistake).

Ok thanks for confirming.