Given, A person's swimming speed with respect to the river, vmr=10m/s As shown in the figure,
Let's determine the speed of the river flow, vr In X-direction, vr=vmrsin30∘ vr=10×sin30∘ vr=5m/s Hence, the speed of the river flow is 5m/s. So, the value of the x to the nearest integer is 5 .