CONCEPT:-Time and Work

-Wage is calculated by calculating the total work done in 5 days by each

SOLUTION: Work done in 5 days by Adam=(1/15)*5=1/3

Amount that Adam gets= (1/15)*5*7200=2400$

Amount that Bart gets=(1/10)*5*7200=3600$

Hence amount that Charlie gets=7200-(2400+3600)=1200$(B)