Half-life prediction of some neutron-rich exotic nuclei priorto peak A=130

beta-decay is amongst the key properties of nuclei required for the modeling of r-process nucleosynthesis. It also governs the flow of abundances among neighboring isotopic chains of high-mass elements. In the present work, a simple proton-neutron quasi particle random phase approximation (p-n-QRPA) model has been used for the calculation of beta-decay half-lives of Rb, Sr, Y and Zr neutron-rich isotopes. For Rb97-103, Sr98-107, Y101-109 and Zr104-112, where the experimental data were available, the half-life values are reproduced with reasonable accuracy. The same set of model parameters are later used to predict half-lives for few neutron-rich nuclei (Rb104-112, Sr108-113,Y 110-114 and Zr113-115) where measured data is not available. The p-n-QRPA results (including only allowed transitions) are compared with previous calculations (allowed plus forbidden) and exhibit agreement within a factor of 2.0 when compared with the recent available experimental data.