Reena climbs up 5 stars every second and then climbs down 2 stairs over the next secon. How many second will she take to climb 60 stairs
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Answered by
2
in one sec stairs and next sec 2 stairs down
that means in 2 sec she climbs 3 stairs
that means in one sec.she climbs=3/2
in 60sec =3/2*60
=90stairs
that means in 2 sec she climbs 3 stairs
that means in one sec.she climbs=3/2
in 60sec =3/2*60
=90stairs
PatelDev1:
sorry for the wrong answer
bhai how 2/3 is coming
in one sec stairs climbed=3/2stairs
did u understand that??
did u understand that??
crosa multiply 2/3
3/2*
take 2 left side
in 2sec stairs climbed =3stairs
take 3 on left side
okk
in2/3sec stairs climbed =1stair
Answered by
1
38 seconds will Rina take to climb 60 stairs
at the back of the book answer is 40 secons
1sec=5 steps
2 sec = -2 =5-2=3
therefore ,2 sec = 3 steps
60 steps =60/3=20
20*no of secs per 5 steps =20*2=40sec
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