Answer :
1. distance covered by karan = x meter
raghav is 2m behind karan
distance covered by raghav= (x-2) meter
shekhar is 4m ahead karan
distance covered by shekhar = (x+4) meter
2. rita weighed 20kg on her last birthday
in one year,she put on x kg
her weight now = (20+x) kg
raghav is 2m behind karan
distance covered by raghav= (x-2) meter
shekhar is 4m ahead karan
distance covered by shekhar = (x+4) meter
2. rita weighed 20kg on her last birthday
in one year,she put on x kg
her weight now = (20+x) kg