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Resource allocation is the key concern in cloud computing nowadays. Cloud resources (hardware & software) are allocated dynamically according to the demand of upcoming applications as well as user as requirement. Objective of service provider is to increase the utilization of resources which helps in load balancing in cloud computing. In this paper, a novel task-assignment model is proposed along with the load based task assignment algorithm and the selection processes involved in it i.e. the minimum loaded virtual machine is assigned the task so that the resources should be efficiently utilized. The experimentation is carried out with varying number of VMs to examine the performance of proposed algorithms to optimize the resource utilization.