MauriceLong
I need help with this. Can someone help me please.
A wheel makes 6 7/15 revolutions per minute. If it rotates for 80 minutes, how many revolutions does it make?
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AbhimanyuPudi
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67/15 x 80 = 357.33 revolutions
ganeshie8
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since per minute its making 6 full revolutions + 7/15th of a revolution,
in 80 minutes it would make 80*6 + 80*7/15 revolutions
MauriceLong
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How you multiply 7/15
MauriceLong
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Im still confuse with this problem.
ganeshie8
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which part u confuse wid ?
did u get how it makes ( 80*6 + 80*7/15 ) revolutions in 80 minutes ?
MauriceLong
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i kind of got it but not really. Algebra is very complicated
ganeshie8
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if we rush, it looks complicated. go slow, then it would make sense
MauriceLong
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80*6=480+80=560*7/15 im comfuse with the 7/15
ganeshie8
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ok, so u get how its ( 80*6 + 80*7/15 ) revolutions in 80 minutes,
but u want to knw how to simplify it, right ?
MauriceLong
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yes, your right. how too simplify it
ganeshie8
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80*6 + 80*7/15
480 + 560/15
ganeshie8
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we can simplify further.
MauriceLong
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How would you answer the problem.
ganeshie8
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80*6 + 80*7/15
480 + 560/15
480 + (555 + 5)/15
ganeshie8
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80*6 + 80*7/15
480 + 560/15
480 + (555 + 5)/15
480 + 555/15 + 5/15
ganeshie8
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fine, so far ?
ganeshie8
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i did nothing fancy, i just wrote 560 = 555 + 5
MauriceLong
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ok.
MauriceLong
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is the answer 560/15
ganeshie8
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15 goes in 555 , right ?
MauriceLong
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yes
ganeshie8
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80*6 + 80*7/15
480 + 560/15
480 + (555 + 5)/15
480 + 555/15 + 5/15
480 + 37 + 5/15
ganeshie8
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15 goes in 555, 37 times
ganeshie8
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80*6 + 80*7/15
480 + 560/15
480 + (555 + 5)/15
480 + 555/15 + 5/15
480 + 37 + 5/15
517 + 5/15
ganeshie8
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80*6 + 80*7/15
480 + 560/15
480 + (555 + 5)/15
480 + 555/15 + 5/15
480 + 37 + 5/15
517 + 5/15
517 + 1/3
517 1/3
ganeshie8
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we are done wid simplifying !
ganeshie8
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see if that makes sense :)
MauriceLong
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ok it does make since. I get it lol
ganeshie8
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glad to hear friend :)
MauriceLong
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thank you so much
ganeshie8
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np.. yw !