Peter can cover a certain distance in 1 hr 24 min by covering two-third of the distance at 4 kmph

2/12x + 1/15x = 7/5
X= 6
11 years agoHelpfull: Yes(4) No(4)
time=distance/speed hr = (km)/(km/hr)
1 hr 24 min = 1.4 hr
1.4=((2x/3)/4) + ((x/3)/5)
x= 6 km
10 years agoHelpfull: Yes(4) No(0)
Let total distace be x. Total time 1hr 24 min i.e (14/10)
So 2/3of x distance by 4 kmph, 1/3 of distance bt 5 kmph.
(((2/3x)/4)+ ((1/3x)/5)= (14/10)
x=6 km
10 years agoHelpfull: Yes(3) No(0)
hi manvir please explain clearly
11 years agoHelpfull: Yes(0) No(8)
ans 6 km

t=(2d/3)/4 +(d/3)/5
where t=1 hr 24 min ie 7/5
10 years agoHelpfull: Yes(0) No(0)
6km
total distance covered in 1hr 24 mins = 84mins
2/3 of 84 mins= (84/3)*2=56mins
56mins in 4kmph n rest 28mins with 5kmph=
3.7km(in 56mins)+2.3km(in 28mins)=6km
9 years agoHelpfull: Yes(0) No(0)
Time=Distance/Speed
Time=1.4hr
let distance=x
1.4=((2x/3)/4)+((x/3)/5)
7/5=2x/12+x/15
x=6km
8 years agoHelpfull: Yes(0) No(0)
total distance= x
2x/3 of 4 +1x/3of 5=1hour+24/60hour
2x/12+x/15=7/5
after solving this equation
x=6
8 years agoHelpfull: Yes(0) No(0)

Peter can cover a certain distance in 1 hr. 24 min. by covering two-third of the distance at 4 kmph and the
rest at 5 kmph. Find the total distance.