A boy covers a distance of 50 km in 9.5 hours partly on foot at 7 kmph and on cycle at 18 kmph. Find the distance covered on foot.
Answers
Step-by-step explanation:
hyydxccyìnjjjjnjjjjjjjjuuhfdcv
Answer:
A man travelled a distance of 50 km in 8 hours. He travelled partly on foot at 5 km/hr and partly on bicycle at 7 km/hr. What is the distance (in kms) travelled on foot?
This pillowcase is quickly becoming the must-have gift of 2020.
Given data are
Total distance travelled by a man, x=50km
Time taken to cover 50km,t=8h
let x1 be the distance covered by foot in time t_1 with a speed of v_1=5\, km/h, then
t1=x1v1——(1)
Remaining (50−x1) distance cover by bicycle in time t2 with a speed of v_2=7\, km/h, then
t1=(50−x1)v2——(2)
We have
t1+t2=t
x1v1+(50−x1)v2=8
x1v2+(50−x1v1)v1v2=8
⇒x1×7+(50−x1)×5=8×5×7
⇒2x1+250=280
⇒x1=302=15km
Step-by-step explanation:
this is answer please follow me deer and like me