sunil start from home at 4 pm and reaches school everyday at 5pm to pick up his children.on saturday the school got over ai 4 pm and children started walking towards home.sunil met them on the way and returned home 15min early.if speed of sunil is 35km/hr then for how many min did children walk? what is speed of children??? Choose the correct choice from the following answers:
A) 4 km/hr. B) 5 km/hr. C) 6 km/hr. D) 7 km/hr. E) 8 km/hr.
sunil reach 15 min early. it is time save at both for going to school and coming to home.   so, sunil meet children befor 15/2= 
<gadget id="calculator">15/2</gadget>
<output>15/2 = around 7.5</output>
7.5 min.   speed of sunil is 35km/hr i.e. 583.33 m/min.   remaining distance to cover by sunil or else we can say total distance cover by children is 7.5*583.33=4375 m   Sunil meet children after 52.5 min i.e. (1hr-7.5min).   so 4375 is distance cover by children in 52.5min.   so, speed of children is 4375/52.5=83.33m/min=5 km/hr.   ANSWER:5 km/hr.
<result>B</result>
sunil start from home at 4 pm and reaches school everyday at 5pm to pick up his children.on saturday the school got over ai 4 pm and children started walking towards home.sunil met them on the way and returned home 15min early.if speed of sunil is 35km/hr then for how many min did children walk? what is speed of children???