1. 1. Any person claiming an undivided part of any land sold for taxes may redeem the same on paying such proportion of the purchase money, interest, penalty and subsequent taxes as he shall claim of the land sold.
2. 2. Any person claiming an undivided share in any land out of which an undivided part shall have been sold for taxes, may redeem his undivided share by paying such portion of the purchase money, interest, penalty and subsequent taxes as he claims of the land sold.
3. 3. Any person claiming a specific part of any lands sold for taxes may redeem his specific part by paying such proportion of the purchase money, interest, penalty and subsequent taxes as his quantity of ground shall bear to the whole quantity sold.
4. 4. Any person claiming a specific part of any lands out of which an undivided part shall have been sold for taxes charged on the whole tract or lot, may redeem his specific part by paying such proportion of purchase money, interest, penalty and subsequent taxes as his quantity of ground shall bear to the whole quantity taxed.

(RSMo 1939 §§ 11140, 11141, 11142, 11143)