Solution:A claim for 'quantum mertuit' cannot succeed when a indivisible contract for a lumpsum is partly performed.
Quantum Meruit - Under Indian contract act 1872, what one has earned" or as much as he has earned hears a reasonable sum of money to be paid for services rendered or work done when the amount due is not stipulated in a legally enforceable contract ."
It is only an obligation created by law not a contractuall remedy.
On obligation a person claim payment in following cases :- work done & goods supplied without contract:
-When original contract has been terminated breach of contract by one party.
-Work don’t and accepted under void agreement.