((4)/(7))^(th) of the boys and ((6)/(11))^(th) of girls of a school participated in marathon.if the number of participated in marathon.if the number 124 are boys,what is the total,number of students in the school? 359b.371c.411d . 377
Usha particpated in a marathon walk and completes the journey in 10 h. if she travels half the distance with a speed of 10 km h^(-1) and rest of the distance with the speed of 15 km h^(-1) then calculate the total distance of the marathon walk.
