Question

A jewelry store ran a report on the pieces of jewelry that were sold last week.

pins
6
key chains
14
rings
5
pairs of cufflinks 24

Based on past data, how many of the next 91 pieces of jewelry sold should you expect to be
key chains?

Answer 1

Answer: expected number of key chains sold = (14/49) * 91 = 26.

Explanation:

(key chains sold last week) / (total pieces of jewelry sold last week) = (14) / (6 + 14 + 5 + 24) = 14/49

We can then use this proportion to estimate the number of key chains we can expect to be sold out of the next 91 pieces of jewelry:

(expected number of key chains sold) = (proportion of key chains sold) x (total number of pieces of jewelry to be sold)

= (14/49) x 91

= 26