A car travels 60 km in 1 hr 30 min.How long will it take to cover a distance of 100 km at the same speed.through direct and inverse variation
Answers
Answered by
2
we know that,
v=d/t
v=60/1.5=40km/hr
now,
d=100km
so,
v=d/t
t=d/v
t=100/40=2.5hr
t=2hr 30min
v=d/t
v=60/1.5=40km/hr
now,
d=100km
so,
v=d/t
t=d/v
t=100/40=2.5hr
t=2hr 30min
Answered by
1
as speed is same so it is direct variation
so x/y = constant
and 1 hour 30 Mins means 3/2
so solution- 60/3/2=100/?
90*y = 60*100 y= 60*100/3/2
40/1=100/ y
40*y= 100*1 ( cross multiply )
y = 2/1/2
it is a mixed fraction
and / denotes upon
hope it helps u !
so x/y = constant
and 1 hour 30 Mins means 3/2
so solution- 60/3/2=100/?
90*y = 60*100 y= 60*100/3/2
40/1=100/ y
40*y= 100*1 ( cross multiply )
y = 2/1/2
it is a mixed fraction
and / denotes upon
hope it helps u !
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