A toy company manufactured 12,000 model racecars. Alisha, who works in the
quality control group, chose 250 of the model racecars at random and had them checked for defects. Of the 250 racecars, 212 were found to have NO defects. Assuming this ratio held true for all 12,000 model racecars,

Q: How many of the racecars had defects?

what i have so far is that 38 cars have defects out of the 250 and 212 don't thats where im stuck..what do i do next with the ratios?

Question

A toy company manufactured 12,000 model racecars. Alisha, who works in the
quality control group, chose 250 of the model racecars at random and had them checked for defects. Of the 250 racecars, 212 were found to have NO defects. Assuming this ratio held true for all 12,000 model racecars,

Q: How many of the racecars had defects?

what i have so far is that 38 cars have defects out of the 250 and 212 don't  thats where im stuck..what do i do next with the ratios?

anonymous · Answer

nevermind i found it

anonymous · Answer

out of 250, 212 were ok means that 38 were defective

since same ratio holds true, then

   38            ???
-----  = -------
  250        12000



38 * 12000
----------  =  ????
     250

1824 = ????

so 1824 cars out of 12000 were defective..