a. Amita offered to sell her diamond ring to Kavita for $680.Kavita replied purporting to accept and enclose $80, promising to pay balance $600 in six equal instalments. Is Kavita 's acceptance Enforceable?

b. An interior Decorator took a contract to furnish and decorate a flat for Rs 5,00000.When the work was done customer paid him 2,60000.Then because of defects in Kitchen units which would cost around about Rs 85,000 to put right, he refused to pay the remaining sum of Rs 2,40000.Decide the case.