marrioncu17
marrioncu17 marrioncu17
  • 04-03-2018
  • Mathematics
contestada

Giving brainiest+points need explanation on this one my answer is 25 is it right?

Giving brainiestpoints need explanation on this one my answer is 25 is it right class=

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zrh2sfo
zrh2sfo zrh2sfo
  • 04-03-2018
Known facts:
A line shaft rotating at 250 rpm, a grinder shaft that turns at 1200 rpm diameter of grinder pulley is 5 inches.

1. Proportion equation
350/1200 = 5/x

2. Cross multiply 
1200*5=250*x
x=(1200*5)/250 = (24*50*5)/(5*50) = 24
The big wheel diameter is 24 inches


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