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On the planet Oz, there are 8 days in a week- Sunday to Saturday and another day called Oz day. There are 36 hours in a day and each hour has 90 min while each minute has 60 sec. As on earth, the hour hand covers the dial twice every day. Find the approximate angle between the hands of a clock on Oz when the time is 9:40 am.
a.251
b.111
c.29
d.89
Read Solution (Total 2)
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- in 1 hour the movement of hour's niddle will b:360/18=20 degree
so in 9 hour it will b=9*20=180
but deir z 40 min also....
in 90 min the movement of hour niddle:20 degree
in 1 min=20/90=2/9
in 40 min=40*2/9=80/9
......
the total movement of hour niddle=180+(80/9)=188.88
min niddle mov. in 90 min=360
in one min=360/90=4 deg.
in 40 min=40*4=160
so the angle b/w hour n min=188.88-160=28.88=29 degree aprox.. - 13 years agoHelpfull: Yes(4) No(2)
- 29 will be answer..
- 13 years agoHelpfull: Yes(0) No(0)
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