SOLUTION: Α Boy covered 31 km in 4 hours
He cycled part of the way at 14km/h and walked the rest of the way at 4km/h
How far did he walk?
Algebra.Com
Question 870282: Α Boy covered 31 km in 4 hours
He cycled part of the way at 14km/h and walked the rest of the way at 4km/h
How far did he walk?
Answer by mananth(16946) (Show Source): You can put this solution on YOUR website!
Boy covered 31 km in 4 hours
He cycled part of the way at 14km/h and walked the rest of the way at 4km/h
How far did he walk?
let him walk x km
speed =4 km/h
t=x/4
he will cycle 31-x
speed =14km/h
t=(31-x)/14
cycle time + walking time = 4
x/4 + (31-x)/14 =4
Multiply by LCM 28
7x+2(31-x)=4*28
7x+62-2x=112
5x=112-62
5x=50
x=10 km
he walks 10 km
RELATED QUESTIONS
A boy covers 31km in 4 hours. He cycled part of the way at 14 km/h and he walked the rest (answered by ankor@dixie-net.com)
A boy covered 28km in 5 hours. He cycled part of the way at 11km/h and walked the rest of (answered by josgarithmetic,ikleyn)
A runner covers 31km in 4 hours. He cycled part of the way at 14 km/h and he walked the... (answered by rwm)
A man covers 31km in 4 hours. He cycled part of the way at 14 km/h and he walked the rest (answered by jorel1380)
A boy hikes 41 km and for the first part of the hikes he walks at 4km/h . For the rest of (answered by ankor@dixie-net.com)
10. A motorist covered a journey of 690 km in 8 hours. He covered part of the journey at... (answered by josmiceli)
A motorist covered a journey of 690 km in 8 hours. He covered part of the journey at 90... (answered by josgarithmetic)
Sanjay drove 570km from Regina to Winnipeg in 6.5 h. He drove part of the way at 100km/h... (answered by stanbon)
Some time ago, you asked the following problem:
``Oscar finished the 44 km trip in 6... (answered by Theo,MathTherapy)