A plastic bin contains red, yellow, and green key chains. Out of 350 key chains, 10% percent are yellow. Of the remaining key chains, 3/5 are green. How many red key chains are inside the bin?
26
35
126
189

Question

A plastic bin contains red, yellow, and green key chains. Out of 350 key chains, 10% percent are yellow. Of the remaining key chains, 3/5 are green. How many red key chains are inside the bin?
26
35
126
189

hero · Answer

Howd I get here?

hennawho · Answer

find out how many key chains are green and yellow then subtract it from 350 to find the amount of red->>> 
yellow= .1 x 350
green= 3/5 x 350
red = 350 - green - yellow

hennawho · Answer

wait no thats not right. this is what u have to do...

hennawho · Answer

yellow= .1 x 350 = 35
Since 35 are yellow, the rest, 315, are red are green
out of 315, 3/5 are green so,
green = 3/5 x 315 = 189
so the rest are red
350-189-35= 126!!!!!