the ratio of the number of defective chips to the total number of chips
i.e. (2+5+6+4) = 17 : (5,000+12,000+18,000+16,000) = 51,000
i.e. 17 : 51,000 = 1 : 3,000
which means that 1 out of every 3,000 chips is defective, so out of a total 60,000 how many are defective?
Cross multiply : (60,000 *1)/3,000 = 20 chips are defective
i.e. (2+5+6+4) = 17 : (5,000+12,000+18,000+16,000) = 51,000
i.e. 17 : 51,000 = 1 : 3,000
which means that 1 out of every 3,000 chips is defective, so out of a total 60,000 how many are defective?
Cross multiply : (60,000 *1)/3,000 = 20 chips are defective