Two automobiles start out at the same time from cities 595 km apart if the rate of one is 8/9of the rate of the Other if they meet in 7 hours what is the rate of each??
NISHANT0005:
135/7 and 120/7....is that ryt????
Answers
Answered by
73
let the speed of first car be x km/hr
speed of 2nd car =x*8/9 =8x/9 km/hr
after 7hrs distance travelled
by 1st car=7*x=7xkm
by 2nd car=7*8x/9=56x/9
now
A/q
7x+56x/9 =595
63x+56x=595*9
=119x=595*9
x=595/119 *9
=x=45
speed of first car =45km/hr
speed of second car=45*8/9
=40km/hr
speed of 2nd car =x*8/9 =8x/9 km/hr
after 7hrs distance travelled
by 1st car=7*x=7xkm
by 2nd car=7*8x/9=56x/9
now
A/q
7x+56x/9 =595
63x+56x=595*9
=119x=595*9
x=595/119 *9
=x=45
speed of first car =45km/hr
speed of second car=45*8/9
=40km/hr
Answered by
4
Hope this hels.......
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