The average marks of four students together is 60%. The average marks of Ram, Dev, Atul and Pankaj individually are 46%, 52%, 70% and 82% respectively. If the average marks of Ram and Dev together is 49% and that of Dev and Atul together is 60%. What is the ratio of number obtained by Ram and Pankaj?
a)13:11
b) 7:11
c) 7:13
d) 11:7
Sol:
