Solution of URI 1079::Weighted Averages

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#include <stdio.h>

int main() {

    int N,i;

    float num1,num2,num3,avg;

    scanf("%d",&N);

    for(i=1;i<=N;i++) {

        scanf("%f%f%f",&num1,&num2,&num3);

        avg=(((num1*2)+(num2*3)+(num3*5))/10);

        printf("%.1f\n",avg);

    }

    return 0;

}