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Pls answer my question its very urgentquestion - 6,7,8

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Questions 6: speed of TRAIN is 80×4/5 /hrs
Give that time is 4×3/4 hrs.
Distance = speed ×time.
=( 80×4/5 )* (4×3/4)
=1919/5 KM
383×4/5 km.
Questions 8:
LET NUMBER is =x
1/3 of x is =x/3
2/7 of x is = 2x/7
Now given that 1/3 of a number exceed it 2/7 by 1 .
Then
(x/3) -1 = (2x/7)
X/3 = (2x/7) + 1
7x= 6x +21
x = 21
So number is 21.



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