SOLUTION: Can a tutor be so kind to help solve this problem below? A sample of 138 firecrackers contained 7 "duds". How many duds would you expect in a sample of 2346 firecrackers?

Question 485158: Can a tutor be so kind to help solve this problem below?
A sample of 138 firecrackers contained 7 "duds". How many duds would you expect in a sample of 2346 firecrackers?
Answer by ankor@dixie-net.com(22740) (Show Source): You can put this solution on YOUR website!
A sample of 138 firecrackers contained 7 "duds".
How many duds would you expect in a sample of 2346 firecrackers?
:
We can use a ratio equation
let d = no. of duds in 2346 f.c.
:
=
cross multiply
138d = 2346 * 7
d =
d = 119 duds in a sample of 2346 f.c.
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